I had this problem in a severe way similar to what you spoke about. Currently I'm not addicted to social media or other apps anymore, although I spend 14h per day on the computer still...
Social media made my brain feel stupid and made me feel with no will to live. I couldn't delete the apps though because I felt I would be missing out on findings. What I did was purposely worsen my app experience by starving it of content to recommend to me. I did this with Facebook and Youtube, I don't know how feasible it is with other apps, but these are the steps I took:
I unfollowed everyone, friends, pages, etc. Spent roughly 1 to 2 weeks clicking the "don't show me this page" on every recommended post on the Facebook feed, including the reels section. Facebook then started following random pages for me on its own, this isn't new, it has always done this, so I would unfollow them again. After that said time, their algorithm gave up and my feed page looked like this:
It was frustrating to get to this point but at the same time I had some fun fighting Facebook and once I got to this point I was pretty proud of myself. Also, after I got to this point, I noticed how differently I started using the app. Now I actually engaged with the groups I was part of since I would open the app and wouldn't get distracted with random bs content. Now when I use facebook is to check on the groups tab for posts for the groups I care about, and for the marketplace tab when I want to buy something second hand.
For Youtube it was similar, just more data to go through. I removed all the info I could through the labyrinth of the settings and, after going through that tedious and purposely repetitive process, I reached the glorious empty feed:
This also occurs on the mobile app version of these websites. For Youtube, since it sometimes likes to show you a short when you open the app, I even see this:
This also changed the way I use Youtube. Since there's no content recommended to me, my main page became the subscriptions page and now I actively engage more with the youtubers I'm subscribed to. Sometimes there's no new videos from any creator, so I actually have to think about a topic I'd like to watch a video about. This felt nice, like the old internet.
Not everything is sunshine and rainbows, I'm still on the PC for 14h a day every day including weekends unless I have chores to do...however, I'm using my time better at least. Signed up to a website about books, started using a different search engine, found a nice website with more unknown music artists. Feels better.
If you can't let go of the apps, you may want to try this approach and have a healthier way of using those apps, or just using this to help you get the strength to finally uninstall them.