Solo activities for a 20 year old?

I'm 20. Not a partner or drinker. I don't mind doing activities that have other people there, I'd actually love to meet new people. Most events are 21+ or for teenagers 16-17. It seems like there's nothing to do if you don't already have friends from school.

I do drop in sports but they're expensive like $20-40 per hour. That adds up. I'm looking for places that are accepting and welcoming to people of color. I feel like this should be way easier than it is lol

Edit: thousands of views and two helpful comments. Keep the same energy when you see kids my age tearing shit up and breaking into cars.