Thanks for that great question and thanks for the responses.

For real life friends Meetup is most popular where I live.

Something like Neocities perhaps?

Or maybe you’re interested in Slowly, a digital pen-pal app? :)

Good luck making friends out there! 🫶🏼

Wusoup maybe

It’s no app, and I dislike the parent company, of course, but I have made friends through hobby-driven Facebook groups.