The YouTube rabbit hole

Started letting my 6yo watch YouTube in the morning while I make breakfast and now he's been exposed to all kinds of stuff I didn't approve. Apparently there's some weird trend where kids watch other kids opening toy packages for hours? And he found some scary content mixed in that gave him nightmares. I feel like I opened pandora's box. Now considering no YouTube at all and just using Disney+ and Netflix where I can preview everything. Anyone else deal with this?