I met most of my close friends (about 20 people) in my mid 20s (I'm in my 40s now). I created a meetup group and ran it for almost 10 years. People would come

I met most of my close friends (about 20 people) in my mid 20s (I'm in my 40s now). I created a meetup group and ran it for almost 10 years. People would come and go from the group and eventually, a solid group of friends (and my spouse) came out of it. I have 2 young kids, which makes things challenging. Half the group has kids and half doesn't. We make it a habit to reach out and get together at least once/month (much more during the holidays) and have an active Facebook group for random texts about something cool or scheduling the next get together. I think the key is just initiating.