I know that friendship is what you make it... but I used to see friends every week - anything from a low-key chat to a big night out and everything in between, even up to just before lockdown.
Now there's a coordination of diaries just to chat on the phone. A face-to-face meeting takes weeks, sometimes months, to plan, now.
And this is with people who live within 5 or 10 miles, and we all have cars and drive. Meeting up with people from 100+ miles away is like planning a major event.
I know it's "just life" and life stages but it's a change of times, too. My mother's generation would still pop into friends and neighbours, even with with children and family responsibilities. Or she'd ring them. If they weren't in or busy, they just didn't answer the door. Or, as @Crankylanky said, they just didn't answer the phone.
There was no prolonged planning stage.
I don't think Mum ever even had a diary - we had a wall calendar with birthdays, school holidays and dentist appointments.
Everything is so complicated now. Nothing is spontaneous.
I happened to watch some YouTuber, the other day, who was saying that they send a calendly link to their friends for catch ups.
If I had to send a calendly link, just to have a coffee, I think I'd just give up altogether, lol.