Why not Reddit? I’ve found more reddit users irl after I left than anytime before. Seems plenty normal. Otherwise, facebook/tiktok/Instagram/YouTube scrolling. I assume Tumblr and Twitter, too. A myriad of endless mobile games based around bubbles, blocks, or tower defense. I’ve also seen cross stitch and paint by numbers type apps. I’m sure there’s people that doomscroll regular news sites.

I’m guessing you’re looking to use your time better and want recommendations though, not just a list describing how every cohort is doomscrolling their little diminishing dopamine box.