It can be quite difficult, but not impossible to stay away from US goods in Canada. Given our geopolitical closeness, truly buying nothing from the US is likely functionally impossible. Somewhere down/up the chain there will be someone using imported things to make the goods you buy.

Me personally, I don't sweat it too much. I buy Canadian when I can, but I don't kill myself over it. The one big thing I draw the line at is foods, I'm not really in a position to be buying more expensive food over morals. If the US bag of carrots are cheaper, I'm buying them. I do however choose the Canadian option if given the chance, and have been having great fun exploring what Canadian alternatives/products are available.

The real hit in all this is the business owners of Canada. I've spoken to quite a few people who do little side businesses and it's largely impossible to sell to the US with the tariffs. Vice versa too, I sometime go on ebay to buy vintage enamel pins, and its just not realistic to drop like $30 on one pin, with most of it being tariffs. It's somehow cheaper to get pins from Britain and France on ebay than from the US now. This is just a small anecdote of the situation of course, but you can imagine how it effects everything else in the economy small and large. I worry that if we return to the status quo, we will be simply economically domesticated by the US.

Big respect on not buying games on steam. Personally if its not on steam, I'm not buying the game. The only exceptions I've ever made was for technically Minecraft, Star Sector, and Vintage Story.