Volunteering in rescue services (DLRG is another one that is particularly relevant in this disaster, and the German Red Cross (DRK) is another big one) is generally a great way to go out and meet people to be honest. I neither have the time nor physical fitness for it but I know some volunteers and they certainly know how to have a good time.

I think volunteering is also more common in rural areas. A lot of times volunteer trainings are done as youth activities (e.g. the DLRG does a lot of swimming related activities so it's a good option if you enjoy swimming as a sport).