I no longer use fb, instagram and twitter. Was not a premeditated decision though. Just lost interest on them. I found traditional forums like hn more enjoyable.
In the past - many groups like clans on games had their own forum with their own members. With topics like "Humour", "Game X", "Game Y", "Introductions", ...
Nowadays that seems to be mostly gone - though more replaced by Discord than Reddit.
However, niches just moved to Reddit and I stayed behind :)
I miss those times somewhat.