I'm turning 39 next month. I thought that by now, I'd surely have at least one close friend. Last year, I got a taste of that, but it didn't turn out well. My friend wanted to start a business together, and we did, but I ended up feeling used and eventually quit. Now she doesn't talk to me, even though i thought we were on good terms. Anyway, I'm also an INFJ, so I've accepted that my social circle will probably always remain very small or even non-existent. I get sad about it sometimes.
Edit to add: Through the years I've tried to make connections through groups, classes, hobbies, apps etc. These days I dont feel like trying anymore, and I guess that kind of worries me, because if i am not actively trying to be social, then how will I make a friend?