"I have a problem with establishing boundaries.
I’m a private person. That’s very often misinterpreted as being arrogant and feeling superior to others. I’m not, I just wish to be left alone, but people still feel disrespected and it’s tiring to be constantly explaining yourself. And I don’t understand why I have to explain myself constantly."
Maybe say something along the lines of this.
I got to disagree with the “learn the language and customs” thing. I live (also born and raised) in one of the most culturally diverse cities in America: Germantown, Maryland. I couldn’t be prouder, and I also couldn’t care less if you don’t speak English.
Be yourself. You are welcome here.