https://www.mangago.zone/read-manga/sangyang_the_wanderer/
I beg you, pookie read this
This is a novel but I really love Annoying Zhao Gongzi. As the title suggests the ml's really annoying haha, but he's also lowkey the more normal one between him and the mc. (kinda spoilers but the mc's also annoying & a tsundere lol). Proud and selfish is a good way to describe both of them. Also when I say annoying, I don't mean that the reader gets annoyed whenever they come on screen. I mean that they're literally annoying each other with their BS LMAO. It's really funny please check it out if you haven't.
Any danmei recommendations where both the ML and MC are not good people
It’s enough if both of them are at least proud and selfish