Trust me, I know how you feel. I was a National Merit Semifinalist while my friend with far weaker academics was an Hispanic National Merit Finalist and won a full-ride to her college of choice. As a white male, it was a little annoying going down the list of scholarships and having precious few open to me.

The thing to understand about racism is that it's a societal thing, not an individual thing. Discrimination against an individual can be racist, but only if it contributes to the racism of a society. (I know, the academic usage of "racism" is unfortunately a little different than the colloquial usage)

In your individual case, you might not be as privileged as the students around you, but your race certainly is. I don't know much about Canada, but Native Americans have quantifiably rough lives. On average they make less, are more likely to become alcoholics, and are less likely to make it through college.

It's not about what your ancestors did. People bring that up a lot but you shouldn't be held accountable for the actions of people you never met just because you're related to them. In fact, you aren't held accountable. But you still have to deal with the society we live in as a result of the actions your ancestors took. That society is deeply inequal, and by providing things like scholarships we're accelerating progress in equality that traditionally takes decades to come about.