* work out. I like free weights and bike riding or running for cardio. I recommend the local YMCA as these tend to be more community driven and less profit motivated pickup centers
* cook. this has several benefits. it can be challenging and relaxing while providing necessary sustenance at a price point cheaper than going out. can also be a social thing.
* take a class / learn something. it can be work related, semi work related or something else. I like the free educational videos on the webs. lately I've been getting back into math which is semi work related but in the past I have taken language classes at the local community college.
* outdoor activities or team sports. Did you have a favorite thing to do outside as a child or teen? Maybe you could take it up again or try something new. basketball, soccer (football if you are not in USA), surfing, geocaching, ultimate frisbee, bicycling, golf?
* amateur radio. getting a license is easy if you are at all technical and it opens up some doors for mucking with WIFI or LORA, SDR, and more. hams are an aging group but they are friendly, knowledgeable and desperately want their hobby to survive.
* maker projects. there are many projects already documented on the web or you can build your own. kind of amazing what one person can do with a raspberry pi, some basic electronic parts, and a bit of code.
* volunteer. so many organizations need skilled people. can you mentor people on computer skills or something else?