Rec?

Hate mate

Yeah it's tough. I dunno why they always end up with them...... I guess because they need the darn regret arc? Those regret arcs are pretty popular and most authors do it for the hype of it. A lot of readers find it satisfying when they see the Toxic ML running after like a puppy asking MC for forgiveness blah blah
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SPOILER Black Lotus
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In Black Lotus it's an open ending on the webtoon so not sure if they still end up together. I wish they didn't because that ML didn't really know well what he did wrong and often made excuses. Well that's my opinion however with the way they did the art of the MC and ML as kids it seems like forgiveness is on it's way and they'll eventually work it out.

I can't think of any in the exact genre you're looking for (prolly coz very few exist ;-;) but some similar ones are

To you in the swamp
https://www.mangago.me/read-manga/to_you_in_the_swamp/

Flip Turn (seme is a lesser red flag than the ex but not that great)
https://www.mangago.me/read-manga/flip_turn/

anti P.T.
https://www.mangago.me/read-manga/anti_p_t/

I also want to see more works where ukes dump the red flag and go with a green flag ;-;

Don’t we all But if more weirdo support stories like Jinx, I’ll never get my green flag male lead. Also, Secondo Piatto is a great one where both the MC and ML drop their unrequited love which was only toxic towards the MC (he was an alcoholic & also toxic for himself not the relationship) to be with each other. It’s finish, but the R18 version is still being released.

Yes I love me a redemption arc, but let’s be fr, only a few stories do it right. Honestly it’s hard to create a satisfying story where the toxic male lead gets back with the MC. Personally, I’d prefer if they were just not…sexually harassing them and just played their feelings with the idea of dropping them. Only one I found was Mitsuketa Boku no Omega-sama, could’ve had a better redemption arc though. Crossing the line, Low Tide in Twilight are all better ones, but the sexual harassment deeply upsets me, but their character development are a lot more like able than most. Our Companionship was one that I really liked the most, no sexual harassment, just plain sad unrequited love.

Oh and by Our Companionship, I mean the only BL I found to give up on unrequited love and end up with a sweet green flag ML.

Back to School _ All of You _ Save Me Gently _ Secret Relationship (two toxic guys like the MC this one is a '' love square '')
_ also Chew and Swallow _ i wouldn't say '' love '' more codependency. And obsession. Maybe '' blind love '' from the MC if you want to say '' love '' i would say puppy love or blind love , and toxic situationship. _ The villain isn't a main character in All of You but is in the other 4. Chew and Swallow is '' an ok read until it becomes potentially traumatic '' x-) so be careful. and don't read before sleep.