Anyone ever “ran out of friends”?

There was a time when people came to me quite easily like during college. However as I grew to 30 they all collectively branched off doing their own thing or finding a partner to the point where I’m no longer compatible and I’m slowly losing my roster of people to hang out with. Although they are all in my back pocket to reach out to, they are not regulars anymore and having a casual hangout doesn’t make as much sense as it used to.

I’m not sure what to do here as they’ve all became friends organically and I didn’t have to go out of my way to become friends.