I think it is really hard to change high schools like you have. I get that you want to stick with the music because that is where you have found friends. It is entirely valid.
The BC calc is good.
Consider doing something to mitigate the language issue. At this point that is the only weakness. I’d hate for you to close off colleges that are strong enough academically for you.
What courses in high school have you enjoyed? History, economics, math, chemistry?
As regards to colleges for students who want balance in their lives, look towards colleges in the Midwest or west or the Colleges That Change Lives colleges.
Have you had a chance to tour any colleges near you in order to start identifying types of colleges or features that you enjoy? I had my kids tour a college that they were not interested in so they could learn how a tour goes, what kinds of questions people ask, etc.