Well anecdotally in your small social group that may be true. But Facebook has 2.27 Billion active users...

...for a certain value of 'active' (do they say how it's defined?) My experience of internet companies has generally been that user figures are somewhat exaggerated (to put it politely).

No matter how you define “active”, there is no indication that in the aggregate people are fleeing Facebook - no matter if a few anecdotes are posted on HN.

By Facebook’s generous standards, active users have been flat for a year or more.

I had this problem recently, I wanted to get in contact with an old friend I hadn't seen in years. Because it had been so long I no longer had a current phone number or email address. At this stage we didn't even live in the same country as each other. Solving this problem, or problems like it, might go a long way to reducing the appeal of Facebook.

That's exactly why I joined Facebook in the first place...

Email is such a failure for sending family pictures. My relatives keep changing their addresses without telling anyone, and many email providers have small message size limits so if you attach several pictures then the message may bounce or just not get delivered. For all its faults, Facebook is a much more reliable and usable delivery channel.

I feel you but a quick search finds "As of the third quarter of 2018, Facebook had 2.27 billion monthly active users"

so solve for that, not your dozen or so social group.

A huge percentage are browsing but not posting anymore I would guess.