It’s been reported that people, especially the younger ones, are drinking less so bars are less of an option these days. I have friends who met at bars in the ‘70s and still are happily married, so sometimes bar meet-ups do work out.)
That pretty much leaves work and church for meeting others who are possible dating material. (I met ex at work, and current husband at church.)
Two hard years of Covid didn’t help when it comes to developing and maintaining social skills. (Thanks, Fauci.)
Perhaps the old style bars or pubs - newer bars are so loud, one can barely hear oneself think, leave alone talk to other people.
Back when people read books, places like B&N, Books-a-Million, etc. were great places to meet, particularly if it had a coffee shop annex. The dog park is another place you're likely to meet people with at least one interest in common. In my youth, I will admit to spending entirely too much time in bars, but perhaps, for healthy people, bars are something meant to be outgrown.