I think the experience of jumping between destinations where people might be specifically interested in a sort of retail American culture is probably quite poluted unfortunately. I'm Canadian, but I don't feel the same sense of "lost cause" when I just talk to people I know in my community or at the gym where conversation goes marginally deeper than the most superficially relatable bits of sensational media.

I talk to my friends in their 30s about their relationships or lack of, the hobbies we enjoy, adventures we could go on, difficulties or success at work, family life, economic stuff, random ideas. Online stuff comes up almost only ironically at this point. Granted, I do specifically narrow the people I maintain ties with to only those I can engage with at that level and/or who are otherwise fun to be around. If even a noticeable minority of conversation was chronically online garbage or fake culture war crap, they just get muted/blocked like the rest of them and a friendship doesn't flourish, usually because in real life we can work through our real disagreements if they come up at all, but if it's derived from a presumption we should both be more mad or more aware of nonsense we don't need to think about, it's far more difficult.