If your not getting any dislikes then you can rule out misleading titles & use of thumbnailAnd the nice thing is, everybody has one of those things going for them, so anybody can be successful on youtube.
I'm actually not 100% sure what people subscribe to me for, but it's either the content or my personality, and even my really bad games don't get any dislikes, so I guess my personality might have something to do with it.