I left this comment of yours in my inbox for a long time, because I wasn't sure where to begin.

I think the best advice I can give you is to talk to actual people who are living anticolonialist struggle. There is no such thing as a "brown people seal of endorsement" that you can give white people, even if you find one in a book.

In cases where activists demand total exodus of white allies, you have to either unconditionally accept this, or else come to terms with the fact that your support of decolonializing, re-indigenization, and sovereignty is actually conditional on Indigenous agreeing with you.