Check out improv if that might be your jam. I was effectively in the same situation (more so, via the empty-nest syndrome). Couple that to moving to a new town and working remotely, the isolation was devastating.

Improv pretty much selects for people that are playful, intelligent, and kind (it's a team sport after all).

Another aspect is learn to dance. Dance communities can be very strong, and dancing is a wonderful activity on so many levels. I initially went with expectations of meeting somebody, but now it's solely for the activity and sense of community.