Great advice! You had me with the title! Scrolled past about 50 "Yay 100 subs" to get something worth clicking on! I'm only at 60 subs and I think It will be a long time before I even hit 100 or 1000 till then I'll just keep learning
I feel like you have to give people something to connect with, once you get them to your video/channel you should have a relatability factor, some type of warmth, or personality that will draw them to want to return to your channel/subscribe/comment. Also, with YouTube you only have a short amount of time to grab the attention of viewers and you should remember that everyone isn't going to like you or your content.