I appreciate it’s not for everyone but I love yoga. I follow Yoga With Adriene on YouTube and get along to a class on a weekly ish basis.
For social stuff there is a website called Meetup.com if you’re not on it already, although I struggle to find dates and times that work for me. The other thing is to check out what volunteering you could do near you, it’s a good way of meeting people and helping people or a cause you care about might help keep you interested.
Here’s a bit of what other people round here get up to: