Delete the mobile apps. I scrolled reddit to infinity on my phone going through news that would make me depressed. I deleted the app and have been happy ever since. I come here twice a day for 10 minutes instead and my screen time reduced by 40minutes at least. I don’t feel gloomy all the time because of news too
FWIW I did something similar. Deleted my reddit account and now just occasionally visit specific subreddits that I used to subscribe to. I find that actually going to a subreddit to find specific content I want to look at helps break the loop of endless scrolling but I still get just as informed/entertained.