Do what you said in your own post bud, let the negative drive you, fuel you, people love to see another fall, prove them wrong, show them that their opinions don’t matter, that is what I do. I call my haters my fans cause they are, if someone really doesn’t like you or your videos then ok but they wouldn’t waste time commenting, so think of it like this hater has you on their mind all the time, it hurts them to see you succeed and use it to your advantage. No one’s opinion about you should matter but your own, I understand anxiety, depression, etc very well but I have learned to flip it, turn the tables. Another thing to note, when people are hating they are most likely self projecting, these are things they think of themselves and instead of acceptance they lash out to feel better. Constructive criticism is great and can help your channel but the trolling and negative won’t stop, think of it like this, they want you to stop, they want you defeated, don’t give them what they want, use it as fuel to drive you and make them more upset cause they are the ones who are negative and they will get more negative and it will tear them apart inside.
Theirs a secret to YouTube that most don’t understand, when someone comes to comment negative, thank them for the view. Pewdipie did 2 videos about this but I don’t think most got the message, like him or not he is the biggest tuber, but his videos, one was asking for a million likes and the next video was asking for a million dislikes, cause non of that matters, views are views.