Well, for starters, there are hobby related meetups. I did boardgames and made several friends through that. There are also Singles meetups for certain age ranges. Where they go to go to bars, breweries, or other activities - essentially somewhere where they can meet and talk. My best friend met his current wife at one. Check them out. You’d be surprised what’s available. There are book clubs, sports leagues, etc.

Find something that interests you, and maybe you’ll make a connection with someone.