obviously just uninstalling the apps help, but that's easier said than done because we usually have a reason we're using social media in the first place.
changing the way you receive information is really the key. the problem with social media is primarily that it trains you to have a passive role in receiving information / art / media, and that's what makes it possible for it to suck so much of your time away.
- for news, download an rss reader and actively seek out and follow some writers and publications you trust
- for events, subscribe to local newsletters. many venues have them, and if they don't, there's typically a local publication that has one specifically for events.
- for communication, just try to get the numbers of people you'd otherwise DM, or better yet, just start a discord (or something similar) for your friend group. my friend group has one, and it basically functions as our collective twitter feed.
i could give more specific advice if i knew your particular use case, but those three things alone will get you a long way.