basically i want a manga or anime about a main character who has actual common sense and uses it to solve the overtop situations that only happens to idiots in anime.

He's not gonna be some tsuderes whipping boy, nor is he gonna be a goody goody who is overly selfless and moral.

He's just in this to do the most logical thing best for his own benefit and if it helps others around him it only a coincidence, not planned.

A MC who puts himself first

Outside the Box, you can legally read it for free on Webtoon Live.