Really, that’s it.
You want to play D&D together, you host and DM.
You want to just hang out, you reach out and propose what you’re doing.
You want more purposeful and meaningful time, join a volunteer group you vibe with.
Even if it’s meeting for coffee. You have to be the one who reaches out. You have to do it on a regular cadence. If, like me, you don’t have little alarms in your head that go off when you haven’t seen someone in a while, you can use automated reminders.
I have observed my spouse (who is not on social media) do this and she maintains friendships for decades this way. Nowadays she has regular zoom check ins, book clubs, and more, even with people who moved to the other coast. You do now have the tools for this. I have adopted it into my own life with good results.
Note: you are going to get well under a 50% success rate here. Accept that most people flake. It may always feel painful (and nerds like us often are rejection-sensitive). You have to feel your feelings, accept it, and move on.
You are struggling against many aspects of the way we in the developed world/nerd world live. We have a wealth of passive entertainment, often we have all consuming jobs or have more time-consuming relationship with our families than our parents ever did. We move to different cities for jobs, and even as suburban sprawl has grown, you’re on average probably further away from people who even live in the same city! You get from place to place in a private box on wheels, or alternatively in a really big box on wheels with a random assortment of people. You don’t see people at church, or market day, or whatever other rituals our ancestors had. On the positive side, you have more tools and leisure than ever before to arrange more voluntary meetings.
There was a post[1] sometime back about just having coffee in the afternoon outisdes and how that brought in more people.
I also write about it here [2].
Would be happy to share the code, just lmk!