I remember you used to write about riding. Are you still riding horses?
If not, maybe you could find a barn that needs some help, or a place you could take lessons. Maybe there would be people there you could get to know.
I remember this was a wonderful way for my daughter to feel part of a group of very different people .... but all of them loved horses.
And, isn't music something that you're very good at too? Is there some kind of center where you could teach music? Or participate on a volunteer basis? Doing something for others (especially when we can do something we're good at) really helps.