So I've tested something in the recent month: signed in a secondary Google account on my old phone, sub'd to my main YouTube channel, clicked the bell and all and waited for notifications. 4 videos going live EVERY day I got notified for MAYBE one per day! @TeamYouTube
It's a bad system, as I get more notifications for stuff I never wanted to watch but is similar to my main channel. I get more of those than the notifications I REQUESTED! @TeamYouTube #smallyoutubers