How do you feel less alone in such a large city?

I’ve been here all my life and still feel alone. Unfortunately a lot of my friends are busy. Mostly with good life changes. Moving, babies, etc. Most of them I met through church but we don’t go to the same one any more. I’m currently not at one now. Where else should I go? I’m 40 F a little nerdy and introverted if that helps. I’ve tried here and bumble for friends.

Thanks for any suggestions or encouragement.