I've dialed down my FB activity a lot over the last year but I'm still following a few knife groups there.
There's a CRK, KAI, Realsteel and Reate group that I follow.
Mostly I hate FB. There's way too much hatred and ignorance afforded a podium to spread lies and find "friends" there. I used to be part of an "unofficial" Spyderco fan group there, but it got all weird and uncomfortable when some inappropriate nationalism started being displayed. I think Spyderco even tried to distance themselves from the group. Anyway, it's been a while since I looked at it. I don't miss it.
For the most part FB sucks and exists to only suck your mind and thoughts into a world of "friends" and "likes". Shun FB other than as necessary to keep up with friends and loved ones.
Better yet, pick up the phone and tell them with your own voice what they mean to you. Much better than an emoji.