If "keep up with" involves reading people's feeds, are you just.. using Facebook normally? The "I only..." that's most common around me is only using it for Events and Marketplace functionality, but never looking at people's feeds.
I deleted my Facebook in 2016, and the only reason I've ever wanted to go back was for Marketplace and Events functionality. And if I wanted to keep up with people's feeds, I'd use Instagram (roughly the same thing, I know, but less wordy for me and more enjoyable).
Amusingly, some of my friends that use it for Marketplace express a desire for Craigslist to be popular again, if not only for the absolutely insane people on Marketplace that demand to pay $20 for an item listed at $300 and then start spamming you and making public posts about how you're a thief and scammer for trying to rip off a single parent who just wanted to get their kid a present for $20, linking your profile the entire time.
The events functionality stopped working well around then, so you didn't miss anything there