What you brehs say is an anime (that is at least good, it cant be trash) where the main character is the worst part, show or main cast?
Outside of shirou in fate UBW sometimes, I can't think of many like this. Maybe the MC of fate acropyca counts too but I haven't finished it.
I thought there would be more examples but I'm blanking out
Neon Genesis
Oniisama e
Nothing else comes to mind atm.