I wish I could get to your level of joining something.After my first divorce I done this exersice recommended by my T I went grocery shopping and asked a lot of women for a date and offered my phone# I got rejected by every woman but after about 6 rejections it seemed not to bother me. Just going and doing the workout and not expecting to make friends would be better because what you are doing is good some of them places can be kind of clicky so after a while you will probably connect with someone.Just keep going