The instance you're on only matters in so far as which other instances they've defederated.
You can probably find more centerist instances, but it doesn't really matter because your friend is probably just going to be in the same communities anyways.
I'm not really sure I'd call reddit left of center, though.
I don't think that UBI is the predominant reddit viewpoint either - I think that's just the subs you're in.
I'm Canadian too, and I certainly don't consider reddit as left of center on average. It's almost like 4chan lite.
But on that note, if you're looking for Canadian instances, there are a few good ones.
The obvious one is lemmy.ca, but the other (bigger?) one is sh.itjust.works which is bilingual and I think is québécois.
Presumably a Canadian instance would have relatively Canadian political leanings, although as has been said before, instance doesn't really matter.