how to write a character so they're not a stereotypical evil prick? does anybody here has a character writing experience?

 

im tired of character cliche based on their nationality - if its german, then it's obviously a stern always mad jerkass no matter what (like i know its because of impact of wwii but why nobody then makes a chinese being loyal communists? what's wrong?)

 

my goal is to make a realistic looking character, but something tells me im doomed to write an evil and serious jerkass by accident T_____T

 

my writing skills are lowkey shit but i spent too much time making panels to give up on this idea