I see where your coming from but i dont think you are looking at the right reasons. I don't really 'fit in' anywhere either, i struggle with social contact, i've got a few friends but i can't talk to ppl i dont know very well and i always feel very different from them and uncomfortable. I also come from a disfunctional family which maybe has something to do with it but physically im what you would class as 'common' ie, white, blonde, slim etc. So i dont feel that just because your 'ethnic' you wouldnt fit in, i know a lot of ppl who are physically 'different' from the british norm but who fit in a hell of a lot better than i do. I also know ppl from other disfunctional backrounds who fit in too.
I know its horrible to be in your position but the older iv got the more iv realised there is nothing i can do to change it, i dont like pretending to be something im not so that i can fit in because that just makes me miserable too. my advice is just to embrace who you are, and find a way to use it to your advantage (not easy i know, but it might make you happy)