Red Mansion.
It's pretty much the stereotypical poor mc and rich ml. But, first chapter seriously had me hooked. Both mc and ml were red flags and crazy, its a really good story.
i suggest reading the novel too! It's more in depth depicts mc's character way better.
https://www.mangago.me/read-manga/red_mansion/ Oh, and it's bl!
It’s been a while but I remember this being decent;
https://www.mangago.me/read-manga/interview_with_a_murderer/
Things that deserve to die
preferably bl but anythings ok really