On your phone in particular. I have all turned off except for signal messages from a few people.
Side question: Have you or anyone you’ve known “rang the bell” on content on youtube, twitch, etc? For how many channels? What (kind of dystopian nightmare) was that like?
I find the yt problem pretty easy. I’ve disabled all yt notifications and once or twice a day, I open the app, check my subscriptions and watch videos I care about. Easy