Recommend me some manhwa with MC having a bitchy character who doesn’t give a fuck about...

there's a lot tbh but this is the og
"Reverend Insanity"

How to live as a villain

'Regressor Instruction manual '-- the mc is an asshole, but he's likeable

Myst might myhem

I heard it was axed

Thank you....

My top fav....

I read it but when it turned harem i dropped it even though it is not exactly romantic harem type thing but still I detest that shit....