I have quite a few in varying groups.
4 close friends from school who I see fairly frequently (I wouldn’t go a whole month without seeing at least one, we meet up as a group or individually/smaller groups depending on DC, working patterns etc)
1 other good friend from school and we were bridesmaids for each other, but both of us are rubbish at keeping in touch and she lives on the other side of the world so only see her when she’s back in the UK.
A few friends from uni but these have all drifted to be honest, they lasted a good 10-15 years post uni but now that nearly all have DC, some several, and we all live all over the place, get togethers are fewer and far between. I would still class them as friends, but not close any more,
1 very good friend I made at NCT with my first DC and we’ve been friends for over 10 years. See fairly often, once every couple of months probably.
2 good friends from my very first job. Meet up every couple of months again.
Mum friends I’ve made at the school gates - there’s a small number I meet up with individually for coffee, lunch, exercise, and then others who I only see on group nights out or events, or at play dates.
I’m an introvert these days since being well into my 40’s and love spending time at home on the weekends and evenings as I work FT and have demanding DC, but I always make the effort as I know I would get bored if I never have any social occasions, and I feel lucky to have a number of good people in my life.