I'm male and late 30's, have kids of my own and most of my lifelong friends do too. We all live in different cities and while we don't hang out anymore, are still friends despite not talking to each other for any reason for years. for me and my male friends, we do not chat or meet to catch up, that is... not necessary. a text here or there with "did you get the new PS5" is the extent of it and that's how we all prefer it. Not even online gaming
For people I hang out with, they are friends my wife and I made together. We've also made friends with the parents of the kids' friends from school. Covid aside, as for people I would actually invite over for board gaming or D&D, it's like 6 people. For a party, probably 10-15 people would show up, especially if we were meeting for dinner or an activity of some sort; escape room, bowling alley, arcade, etc.
I am good with these numbers, but as for the OP asking how do you make friends? I would probably start with coworkers, I work in IT and the office is large enough that there's plenty of people there that share the same interests as me. Make it a group thing, covid aside again, it could be drinks on Friday or tennis/basketball/etc. if you have access to courts. Cycling, hiking, whatever you're into. Not everyone will accept and that's OK; they might have kids and don't want to hire a sitter, or they might want to bring the kids, you'll have to decide if you want that or not