This is a great question and something I've often wondered. Most of what I see after deleting recommendations, likes/dislikes, and subscriptions is just click b

This is a great question and something I've often wondered. Most of what I see after deleting recommendations, likes/dislikes, and subscriptions is just click bait. If I put something on that is educational for my kids, next thing I know it is recommending vile content to them. Where do those suggestions and recommendations actually come from?