I would watch YouTube for an hour before bed. It got to the point where I needed it to fall asleep, usually with it playing in the background.

Replaced it with reading books and now I just read until I'm sleep enough, usually when I realize I have to reread sentences repeatedly.

After about a week I had no desire to scroll my YouTube feed for videos. I didn't block YouTube or anything, I still watch videos from creators I follow, but I no longer instinctively reach for it to pass time.