Dude this is like something I’d expect to see from /r/intj. Come on. It’s not half as dramatic as you make it out to be. If quitting FB and IG kills your social life, you really need to branch out.
I’d dragged friends along through multiple platform changes. It took years to get those assholes to let go of Skype… Eventually they all followed, because they’re legitimately my friends and they wouldn’t let something like downloading an app put an end to our friendship. I make an effort to interact with my friends, and they make an effort to interact with me, that’s what being a friend is.
I did the same thing with my family. I was only keeping FB for the family group chat. Just told them I was deleting FB and moving to Telegram. Set up a group in TG and they all switched then and there.