I really empathize with you. You seem like an outgoing, ready to try new things kind of person. I'm 74 and am fortunate to still be making friends. I just started hanging out with two old yoga students of mine. They both loved my classes and were dedicated students but we weren't friends. Now we are and it's great. Is their anyone that you were friendly with in your old professional life but not really friends with? Could you reconnect with someone you never really became good friends with? Just a suggestion of course.