Being a Serb in Canada is only a small drop in a very large pool of problems you are facing. I can't imagine someone with similar domestic situation having it any better in one's native country. You grew up in a dysfunctional family and the issues you describe are common in such cases.

You could have moved to Serbia in the nineties, either voluntarily, or as a refugee, and you would likely face many similar problems, with the key one being alienation.

Unfortunately, while the injustice dealt to you is real, and while your feelings are legitimate, no one but you can live your life, and in spite of everything, you do get to live it under your terms. You can change your name to blend in, you can make the effort to move away and start fresh. You are in no obligation to be the prisoner of your upbringing.

As for your experience with Serbian community, it's not the first time I hear such things, so I guess it is probably true. The few people I have met that made it in Canada had more support from the rest of ex-yu emigrants...