How do you make new friends in your 40s?

42 male here. I tried volunteering at an animal shelter, but I would only meet women that were about 20 years younger than me and I wasn't comfortable being friends with someone that young. I want to get out some this weekend and try to meet new people. I don't drink (I take anxiety/bipolar meds and was told not to drink on those meds, plus I hate drinking anyway). I feel like most people my age have a spouse and a family. Also, I think a lot of people look at single men in their 40s as idiots or damaged goods. What are some activities I can join to meet people close to my age or of all ages for that matter?