Haha, I feel you! Reddit is addictive for sure. Personally, I find myself scrolling through TikTok more often than I'd like to admit. The endless stream of bite-sized updates just sucks you in!
I believe my answer might be a bit unexpected, but I would say Telegram. Although it's not a traditional social network, nowadays there are many thematic groups and channels that provide news along with the ability for discussions. At least for me, I spend a lot of time there.