Most of the friends I’ve made after age 22 were people I worked with or people I met through dating apps. We’d go out and decide we didn’t want to date, but we liked each other enough to form friendships. The friend who I’m hanging out with next week is a former coworker. The one I’m slated to hang with after that is also a former coworker. But only two of the jobs yielded good friendships. Other places that I worked I might go to lunch with certain people, but nothing lasting came of it because I had a long commute to work and they lived in that area.
Others already suggested meetup and I know a friend had success with that. Or join hiking groups or amateur sport groups maybe like disk golf? Good luck!