How does it affect your mental health? Can you change the way you use it?
I have come out of most groups as I was mainly finding myself arguing in them or being annoyed by the content. Then some groups I stayed in but "unfollow".
I unfriend anyone whose posts irritate me or who I don't want seeing my stuff. If I go through my friends list everyone on there is someone I genuinely like.
My main issue is losing too much time on it so I've done a couple of things to combat this.
On my phone, I haven't removed the app completely but I have removed all shortcuts on the home page. I have to actually go into my list of apps and find FB. On my home page I have useful items and a picture of DC and then if I scroll through the home pages (android) I have widgets of useful apps like Calendar, Bullet Journal, Shopping List etc. Reminding me of what I should be doing rather than wasting time on SM.
Also an app called RescueTime, syncs between phone and computer, reports back to me how much time I'm wasting on various websites/apps, and what times of the day. That's scary and makes you think.
A browser add on called ToDo I thought about adding, replaces FB feed with a to do list you have to tick everything off before you can browse.
Are your friends you want to keep in touch with local or far away? If they are local, consider setting up a regular meet once a week/month/etc. Or if you don't set it up officially stick it on your own calendar to contact X and get together. If they are far away, rediscover the lost art of the phone call - it was my new year's resolution (though I have only done it once
) to phone a friend for a chat. That's what we used to do, it's usually surprisingly welcome, you can always call someone back if it isn't a good time and as a bonus you get much more personal with someone over the phone than the surface image they portray on FB. "It's my new years resolution/a lent exercise to phone people rather than being glued to FB" is a good excuse if you feel strange about calling out of the blue.