I was never really into social networks (and related apps) so I thought I dodged the doomscrolling phenomenon... until I started counting my time on Youtube, which is basically a social network.
On top of that, I have RSS feeds sent to my mailbox. Last week I created a separate folder for them and turned off notifications for this folder. It helped tremendously! I still read them, but in bigger batches which does in the long run free up time. Before I used to glimpse at the news all the time which obviously wasn't healthy and hampered my productivity.