I don't know if we're in the minority, but I agree. Facebook has just become the defacto shared calendar for me and my friends, so I spend less than a few minutes on it on average a day.
Just checked and I spent 7 minutes on it on Sunday, nothing since, and the most I've used it in a day in the last three weeks is 5 minutes, at least on my phone.
Similar for Twitter but with a peak at 40 minutes a couple weeks ago (how?!). And Reddit I probably use about twice as much, which is still not bad, I don't think. Is it "social media", really?
That's really all I've got, if we're excluding group chats. Those, I use probably an unhealthy amount.