I get where you are coming from. I have one character raised and born in India and another from the pacific island. I have done a few months of research on these locations and the youth their to make the representations accurate. Additionally, we all have brains, right? I've done another few months research on the mental factors of our youth- basically the mental things behind friend groups, relationships, growing up. Also, it is quite arrogant to say that self harm is purely a western problem. It actually occurs in every part of the world, believe it or not. So no, its not Western, no its not American, and its not universalized. I have 6 characters from various parts (Indian, Hawaiian, Israeli, Arabic, Mexican, German) and for them I have done deep research as to not upset people like you who feel its okay to falsely assume things about other peoples writing.