What I was trying and failing to say in my first post is that if someone has actually made friends on social media, then leaving and coming to the indie web shouldn't be a hindrance keeping in contact. What I meant and what I ended up writing ended up different because I got scared of saying that friendship requires effort.
I suppose that's one way that social media has affected me.
Also to get back on track.
I would advice looking for people who value similar things to you.
I don't really know anything about the becoming friends process. Before I went to a meatspace hobby meetup where the person I mentioned earlier would be, I messaged him to briefly explain my disability because it was gonna affect meatspace interactions and I didn't want to be a confusing mess. Then he was accepting when we were there and I'm still confused about how we ended up in continued contact, except that I made the active decision that I wanted to try and messaged him about a TV show a bit after the meetup.