I also found I can break away from my phone, when I delete and disable all content streams. This painfully includes podcasts and Spotify, at least initially, and I also disabled Safari all together! Otherwise it won't break the habit of reaching for your phone! Screen time limitations for apps won't do, because I am still not getting the tease out of my mind.
The idea is to have the phone for communication with contacts, do-one-thing tools, navigation and personal time and information management. And nothing else. The phone should never be the place where "something happens", where you can discover and explore. It shouldn't be more on your mind than your headphones, not more exciting than a spoon. Notifications should always ever be sent either by "myself" (e.g. calendar) or by real contacts (calls and messages).
Public transport planning/navigation, synchronized calendars and encrypted messaging are the deal breakers with "stupid phones"/no phone, for me.
Sure you can still shift your pleasure seeking to the desktop, but at least your mind won't be bothered by temptation and intrusive thoughts, when you're on a walk, sitting in the bus, in the kitchen, on the toilette, ... You will have a chance to break away.
For desktop web, maybe ublock the 'next' button on websites like HN? Hide all the internet points?