When I was young, I solved loneliness very well by volunteering for political campaigns. Until the last one (I'm too old to care now), I worked every campaign in my life and at various times had a lot of good friends as a result.
My town does an annual party. I heard about it and showed up to volunteer. I did that for a few years. It wasn't as productive in producing friends (I'm in a different location than before that is more insular) but even so, it got me out of the house and, for the few months before the event, was pretty much fun.
These kinds of things are often available if you just look around. It doesn't require knowing people ahead of time and is low stakes. If nobody is friendly, it doesn't matter.
My town does an annual party. I heard about it and showed up to volunteer. I did that for a few years. It wasn't as productive in producing friends (I'm in a different location than before that is more insular) but even so, it got me out of the house and, for the few months before the event, was pretty much fun.
These kinds of things are often available if you just look around. It doesn't require knowing people ahead of time and is low stakes. If nobody is friendly, it doesn't matter.