I have a lot of friends (not a brag, just answering your question). But everyone is busy and we don't get to meet up all that often.
I have three friends from school. One lives abroad. We tend to meet up when the one who lives abroad comes home for her annual holiday.
I have two very close friends. One has been my friend since childhood and the other is a college friend. But they don't live near me. So location is a challenge.
I have a lot of friends from work. A few have retired now, so we have a get together occasionally. But we keep in touch during the year by messaging, so it feels like we're in contact more often. I meet one of them more regularly. She never married or had kids and I don't think she has a lot of friends. I suspect she may be quite lonely. So I try to meet with her more often.
I have a few local friends. I got to know them through an activity I'm involved with. I don't socialise with them really outside of the activity, but we meet up at organised events on a regular basis. I'm closer to one of them and I meet her for coffee from time to time.
I never got friendly with local mothers when DD was a baby. That's one thing I regret. But my maternity leave was short (I had four months paid maternity leave and never took any unpaid leave). The first few months of maternity leave was a blur of sleepless nights, feeding, nappy changing etc. By the time I was considering joining a mother and baby group, it was time to go back to work. I got friendly with a few parents of DD's school friends through birthday parties etc. But we were friendly, not real friends iykwim. Now that our children are young adults, we never see each other. However, I did form a close friendship with one of the mothers. We meet for coffee from time to time.
A lot of these friendships didn't happen overnight. It took time (in some cases, years) to build. And the friendships have waxed and waned at different periods. I didn't have a lot of time for friendships when DD was a baby and a small child. I have more time to invest in them now.