Any indiginous conservatives who have oppinions on this?

All indigenous Conservatives have unfortunately been beaten up by Trudeau.

Not sure if this will work but you could point out how post-European contact enriched their culture. For example horses came from the spanish that were set loose and almost all native canadian flags have a native on horseback. Also their traditional dress with the tin they dance in wouldn't exist without Europeans bringing metalwork to north america. They might just call you a racist though.

More recently, Residential schools were awful in principle. Children should be allowed to grow up with their parents. They were also awful in implementation and resulted in a lot of child abuse. Their purpose was explicitly racist: they wanted to remove native children from the reserves and teach them "white" ways, and have them forget their language and culture.

A lot of the conservative movement in the states supports family and community, and is very against child abuse. I agree with those principles. Residential schools were wrong.

I don't think colonization was racist, like others have said it was about profit, exploration, and later a component of settling in the new world was about fleeing famine or persecution. And viruses killed a lot and left tribes unable to defend themselves, which is unfortunate but completely unavoidable.