These are the ones I can remember but I am sure there were others but they may have been older dramas:
Law cafe
Behind every star
Eve
Jinxed at first
Kiss Sixth Sense
Woori the virgin
The sound of Magic
Our blues
My Liberation notes

I end up fast forwarding Sound of Magic after 1 eps toward the end. And dropped Jinx at First after 5/6 eps.

In 2021 I dropped 5 shows. I think I was more selective this year to avoid quick drops.

DR. PARK’S CLINIC: dropped after 1st episode.

YOUNG LADY & GENTLEMAN: did not finish, watched only partial episodes.

Love in Contract
Once Upon a Small Town
Poong the Joseon Psychiatrist
Today's Webtoon
Café Minamdang
Jixed at First
Woori the Virgin

I had already forgotten many of them.

Ooooh! The count of dramas I dropped this year shocked me. The ones that shock me more are those which had all the ingredients I need but still fell short.

I'll list them by why I should not have dropped them.

A. The actors comebacks I have wanted to see.
1. Artificial City. I was really waiting for Soo Ae's comeback. The only think I've seen her in before AC was Glass Mask and I lurved her in it. Artificial City, however, fell short.
2. Sponsor. This one has a whole Han Chae-young in it so I was so excited to see her again after A Man Called God(the first female lead I came to not like after having a rethink about the drama). I know she is good. And I hoped Sponsor would make me see that. But, Alas!
Not to mention Lee Ji-hoon from RWTMR being a part of the cast.

3. Doctor Lawyer. Shin Sung-rok. I wasn't expecting to watch him in this collosal mess. Truthfully, he was the best thing to happen to Doctor Lawyer, but not enough to keep me watching. Jumped ship at ep 4.

B. Dramas that casted actors or actresses who accolades follow.
1. Show Window: the Queen's House. Song Yoon-ah praises was one of the reasons that made me watch this. At least I got to ep 10. That counts as something, right?

2. Doctor Lawyer. Really, So Ji-sub.

3. Eve. This one has Seo Yea-ji and I expected much.

4. One Dollar Lawyer. Ep 6. I'm yet to be drawn to the Nam Goong-min charm but I see it. Hiding the details about Lee Chung-ah's casting sealed it off.

C. Dramas that ruined my good memory

1. Kill Heel. Oh God. This one really makes me sad. I'm not happy Lee Bo-young picked this after Mine. Kill Heel is a disappointment.

2. Cafe Minamdang. Ep 2 was the end of it for me. What drew Seo In-guk in here, I do not understand.

3. Why Her? Ep 10. This one ruins everything. Infact, it is the first on my list grouped or not. Seo Hyun-Jin, Heo Jun-ho, Choi Young-joon and Ji Seunghyun couldn't make me make it past ep 10. Thanks to the recaps I know what happens at the end. I very much deeply regret this one but I don't think I'm visiting this in distant time before the end of the year.
This one left me not wanting ever to see a noona romance and a very sour first taste of Hwang In-yub's acting.

Other ungrouped reasons
1. Thirty Nine. Ep 9. I thought it was an ensemble cast and not a Son Ye Jin lead drama. No regrets.
2. Good Job. Ep 12 remains to be watched. I just didn't have the time to finish it. And the recaps showed I didn't miss much. It was nice but no regrets.
3. Unicorn. Ep 8. I just didn't have the time to finish it and it hurts. Good thing it was weecaped. Regrets.
4. Chimera. Ep 3. I missed a week and I didn't continue. No regrets.
5. Our Beloved Summer Ep 8. Same as 4's. I regret this though.
6. Snowdrop. I'm sorry Yoo Inna but no regrets.
7. Through the Darkness. Still at ep 4. Does it count if I still intend to watch it. It was too heavy to continue during the time it aired. So when I missed a week,...

I often know right away from some minutes in to the end of ep1 if the drama deserves watching or dropping. So my list is comprised of all the shows I didn’t continue after ep1, or at maximum, ep2.

Behind Every Star
Woori the Virgin
Once Upon a Small Town

I’m sure there are more of them but I just can’t remember for the life of me.

I should mention one show that I stuck through with it till the end. Do I regret it? No, because I could then proclaim that my hope and love for Wookie had come to an end and yes that is The Sound of Magic. Apart from this one pro, I’d rather erase my memory of it if I could.

This is the year I dropped more dramas than completed. Some of them I dropped mid episode 1 : Love is for Suckers, Love in Contract, Golden Spoon, Good Job, Why her, Jinxed At First, Cafe Minamdang, Law Cafe, Becoming Witch, Eve, Kill Heel, One Dollar Lawyer, Once Upon A Small Town, Our Blues, Narco-Saints, Poong the Joseon Psychiatrist, Woori the Virgin.

The sound of Magic
Why Her?
Gaus
25/21
Golden Spoon

Probably others, but these stand out. There are others I should have dropped, but they're for another day.

I can never participate in year-end posts because usually most of the shows I have watched have been from the previous year.

But interestingly nearly none of the shows mentioned here are on my watch list. Guess I have already dodged those bullets.

There are the dramas of which I have watched at least 4 episodes before dropping :

Crazy Love
Jinxed at First
If You Wish Upon Me
Again My Life
May I Help You
Poong the Joseon Psychiatrist
Love in Contract
Grid

I dropped a lot of dramas but still managed to finish 40 some. I need a life.

Jinxed at First
If You Wish Upon Me
Poong the Joseon Psychiatrist
Law Cafe
Kill Heel
Eve
Woori the Virgin
The Sound of Magic
Dr. Park's Clinic
Café Minamdang
Once Upon A Small Town
Why Her
Mental Coach Jegal
Military Prosecutor Doberman
The One and Only
Love All Play
The Golden Spoon
It's Beautiful Now
Three Bold Siblings

Café Minamdang: It hurt to drop a SIG drama so quickly, but I could not stay focused on it for longer than three minutes at a time, and even that was a struggle. This show was silly and often stupid, but I wonder if the real problem for me was simply that I did not find the female lead (actress or character) remotely believable, and she had zero chemistry with SIG (how is that even possible?!).

Love in Contract: The first PMY drama in which I didn't like the character she played. At all. ML was fantastic, but it just wasn't enough.

Our Blues: I watched it faithfully for a long time, and still think it was a great drama. But it started to feel too depressing to press play.

Law Cafe: I intend to go back to it one day because I loved the leads so much, but objectively speaking, it was a very mediocre drama.

Golden Spoon: It started so good! Got really convoluted, excessively dark, and boring so quickly.

Poong: I tried hard to hang in there because KMJ, but found it to be a very conventional, dull drama, even though the leads were cute together.

Today's Webtoon: This needed a more prominent love line to keep my interest.

If You Wish Upon Me: A solid drama that just never grabbed me despite my love for its leads.

I also avoided outright a lot of dramas that sounded interesting when I first heard they were coming out. But then, when they started airing, I couldn't summon the energy to watch. These include: All of Us Are Dead, Jinxed at First, Anna, Sound of Magic, and One Dollar Lawyer.

Jinxed at First
Alchemy of Souls
My Liberation Notes
Cheer Up

There are others that I watched part or whole of Ep1 and did not continue that I don’t consider dropped. I have to at least see what the show is about . For me, a drop would be at Ep 3 or higher.

There are many dramas that I watched the first/second episode and got distracted by something else (the ever expanding content from so many countries and the backlog of classic k-dramas). I don't consider those truly dropped since they will remain on my ever expanding watch list (Gaus, Love in Contract.....). To actually drop a drama, I really have to come to a thought out decision since I am the kind of watcher that does stick with things. Some dramas do take a bit of time to find their rhythm and can be really rewarding so I find it kind of sad to let a show go early. Having said that, there are only two dramas I have dropped this year and have given myself the permission to not go back and watch them, ever!!!
The Sound of Magic: The music didn't work for me, nor the premise.
Attorney Woo: I know this is a well loved show. I got to episode 8 and that was enough for me.

Hoping this topic never has a mutant baby topic with those other recent ones
"You Can Only Drop One"

I only dropped two 2022 dramas:
Woori the Virgin - ep. 6
Summer Strike - ep. 3

I also watched about 20 minutes of If You Wish Upon Me ep. 1, but I don't count that because I expected to dislike the gang element and did. It's possible I'll go back and watch with judicious FF-ing.

There are lots of others I considered but never started after seeing reactions to the first few episodes. (Big thanks to everyone who commented on Big Mouth for saving me from that one.) I've only been watching dramas for a year, so I had a lot of older ones to catch up on and dropped quite a few of those.

My 2022 BINGS (Beans I Am Not Getting):
1. CAFE MINAMDANG. (Sorry SIG.)
2. DEAR. M. (2 episodes were enough.)
3. POONG, THE JOSEON PSYCHIATRIST. (After episode 4 interrupted for travel and never caught up.)
4. GOOD JOB. (After episode 2 interrupted for travel and never caught up. I am a big JIW fan so I may return to GJ.)
5. MAY I HELP YOU? (After 1 episode. I have thing about mixing dramas/comedies and religion. Just me. That is why I never started the fan favorite THE FIERY PRIEST (2019).
6. Not a 2022 drama but a fan favorite I started and unfortunately gave up after 12 episodes: TALE OF ARANG (2012).

MY 2022 BOS (BEAN OF SHAME):
1. A SUPERIOR DAY. (Fortunately only 8 episodes.) (Jin Goo you owe me one. Big time!)

This challenge made me actually buckle down w the list of 2022 dramas. Horrors! 8 watched, 2 pending and 20 dropped. A worse year even than I thought ☹️

The only drama from this year that I started and am not sure if/when I'll get back to is Little Women. I didn't really like any of the characters, which tends to be important for me when I watch something drama-length (unlikable leads work much better in movies, for me at least), and while it was beautiful to look at, I found myself not really caring about the mystery after the premiere week. Dropped.

I also dropped Strangers from Hell/Hell is Other People after one episode because I found it sort of boring. I know that's a weird complaint about a horror drama, and I was expecting to have to drop it because I was scared, but instead I just found my attention wandering. Also see above about having at least one character to cheer for (and the cop was not a major enough character to meet that requirement).

Eve
Why Her
Tomorrow
Gaus
Forecasting Love and Weather
One Dollar Lawyer
Adamas

I actually dropped Extraordinary Attorney Woo. It wasn't bad, on the contrary. But I got real tired of the lengthy episodes I never seemed to have time to finish and a super awkward love line on the rise.

Sound of Magic: I absolutely love the music of the show and Wookie as sketchy magician, but I have a hard time with bullying and the social injustice being shoved down my throat. It makes me so grateful for the society in which I'm living.

Café Minamdang: I love SIG but couldn't stand the FL.

There are countless others but these are the ones I remember on the Kdrama side. 2022 was a great year for dropping dramas, it seems.

I rarely drop dramas, probably because I don't watch many airing dramas; I prefer to wait until they finish airing before deciding if I want to add them to my watch-list or not. However, I did start 2 dramas this year that I eventually didn't finish.

I watched the first two episodes of Tomorrow before deciding it wasn't for me. I didn't like how the whole suicide theme was handled and the show failed to hook me in any way.

I have yet to watch the last 3 episodes of Tracer because I lost interest along the way. I keep telling myself I'll watch them before the end of the year but we'll see soon enough if I actually get around to doing it.

I'm more of an "on hold forever" person, so I've dropped only a few:

Our Blues
Little Women
Golden Spoon
Unicorn
Remarriage & Desires
Woori and The Virgin
Tomorrow
39
A Business Proposal
The Sound of Magic

Now we are breaking up : Jang Ki-Yong is not pretty enough to lure me further in this absence of plot or any ressemblance to reality. (And I lived in Paris... it is not possible to see the Eiffel tower from the Place du tertre in Montmartre. I understand that it's convenient to place the city but Korean do not seem to care about landmarks, they are fewer than scarce in dramas so try to get a reasonnable panorama when you do.)
Touch your heart: I found the beginning very nice, cute and fluffy. And when I reached ep 12-13 I lost interest. They are together, so this is the end of the drama no ?
Familiar wife : I love Ji Sung but this drama is too realistic. I do not want to see the bleak and hard life of exhausted parents. I did not endure the introduction, and thus missed the part where he is not detestable. (I am aware that I ask for some credibility... but a fantaisy can be plausible. I certainly watch murders and vilains with more pleasure than the gross mediocrity of regular humain life.)

The law café : My first Lee Seung Gi drama. I want to believe he is a good actor. However I found him expressionless in the romantic scenes. Other scenes were good, but his face was just a jello bowl when facing Lee Se Young . So I decided to wait for the reviews. Or never pick it up again.

This year, not only that I watched more c-dramas than k-dramas, I dropped all the k-dramas I watched and ended up with zero bean. I did, however, finish the two reality TV shows: Inferno Island and Young Actor's Retreat.

Cafe Minamdang (ep. 10)
Love is for Sucker (ep.10)
Yumi's Cell 2 (ep. 3)
Business Proposal (ep. 8)
Love in Contract (ep. 1)