Turning off notifications - all notifications - helps quite a bit. It's a lot easier to ignore attention-grabbing apps when they can't put their attention grabbing alerts in front of you.
I have an iPad explicitly configured this way, and it's incredibly relaxing to use it.
That does sound pleasant. I wish I could push notifications into a todo list with 1 button / click. I am usually not bothered or distracted by seeing a notification, but having to choose to delete it or act on it immediately is what gets me. I tend to delete everything and keep the interesting ones in the back of my mind for later ("I should check out my gf's new IG post")
I like notifications, and I try to respond to them intentionally. I open apps intentionally (this was easy enough to learn) and close apps intentionally (this was hard to learn). So I am pretty good about actually going into the app to do what I intended to do in response to the notification, and then closing the app. I can reassess afterwards if I want to spend more time in the app and open it back up, but again I create an intention before opening it that has a stopping point.
Intention is the difference between enjoying some funny short videos while sitting in a waiting room, and losing 1-2 hours of your life a day to doomscrolling. And if I could have a filtered list of notifications in a todo somewhere, I can set aside time to update myself on whats new that I care about but arent super important
I have an iPad explicitly configured this way, and it's incredibly relaxing to use it.