I can be proud to be American and a human at the same time. Saying "I love my family" doesn't mean I don't love other people too, and it doesn't mean I think my family is somehow better than other human beings, it just means I love my family. Same logic applies here.
I'm truly sorry to hear you're not having a good time here. Good news is, there's a big old world out there, with plenty of countries to explore! I sincerely hope one day you'll be able to find a country where you'll be just as happy as I am in the US. :)