I have a handful of good friends, mostly the same age as me with a couple of older ladies too.
I have 12 ladies and have regular contact with all of them. We are spread our across the world but I have my 3 best mates from school, my mate from uni, 3 girls from my first job, a girl I used to live with and 4 girls here who I have met since we moved here and I enjoy going out with, chewing the fat, drinking tea, wine with etc.
I don't understand folk with 4 million "friends" on FB I am only friends with people who I am actually friends with or related to (the ones I like). In RL I am also only friends with girls that I like and can relate to. I don't have time for fakery and these weird false women who still act like they're at school - met a fair few of those who are old enough to know better.
I have been ruthless over the years with people who take the piss, are weird, had a real moaning Minny friend once who complained about everything, her weight, no boyfriend, colleagues, so draining to be around her. Also had a couple of stalker girls too (shudder)
You have to be harsh and cut the wheat from the chaff. Get rid of these "friends" who are ditching you or forgetting to meet up. You need to respect yourself.
Real friends are folk that you can pick up with where you left off and who make you feel happy when you're with them.
My SIL said after our wedding, oh you only had 1 bridesmaid but I suppose if you had asked all your friends to be bridesmaids you wouldn't have had any guests. I was like
what a fucking cheek. Implying that I am a norma nae mates. It seemed churlish to say well I wasn't about to have 12 bridesmaids!