I recently quit a drug I was addicted to for years, and soon after started quiting major social media platforms using the same lessons I learned from getting sober!
Your brain is great at eventually returning to a natural baseline. But until that happens, You'll need replacement(s) to tide yourself over
Here are some options that have been helpful for me:
1. Coloring books + music. It might seem very childish, but its super fun and relaxing without putting you at the mercy of the algorithm or ads!
2. Frame reading as a scrolling replacement. Find some breezy, fun reads to start out with. Short story collections are good for this because its more digestable to read 15 stories over 400 pages than 1 story.
3. Going on walks *and leaving your phone at home*. It's exercise(always good), it puts you into the real world, and its an activity that can last pretty long.
4. Accountability to others. Tell your supportive loved ones that you're quiting social media. It gives you purpose, you're now doing it for yourself *and* others.
5. Phone calls. Bored but don't want to scroll? Call someone! Just put them on speaker and pretend they're in the room with you, just chat!
6. Last but not least, physically hang out with people *with your phone turned off*.