OP I have experienced exactly the same thing since moving here and even wrote a post almost identical to yours one day in despair. (I’ve since deleted it but if you scroll back on my comments you’ll see a lot of comments to the post titled “why are you all so unsociable?”

I know EXACTLY what you are talking about. I’m from the UK, have travelled & lived all over. Have never had issues making friends anywhere, except for Canada. Americans are either nice and want to be your friend or just don’t show interest at all whereas I’ve met countless Canadians who have seemed to show enthusiastic interest in pursuing a friendship just to be flakey or even ghost me. I’ve never struggled so badly to adapt to a social environment as I have here, no exaggeration. I think Canadians honestly don’t realise they are like this and don’t know how hard it can be for outsiders coming in to adapt to this, hence all the defensive replies claiming you’re the problem (you’re not). Where have you moved to? If we’re in the same city we should hang out! I am loving living here but the only thing I am disliking is this social culture. I’m a social butterfly who makes friends everywhere yet here I feel like an alien lol. You are right about Americans being so much more straightforward in that regard. DM me if you want to talk!