OK! From seeing this video I will definitely need to let you know about some stuff. First the routes. There are 3 routes, neutral, pacifist and genocide. And from this video it looks like your doing genocide ( which I don’t think is a good idea for your first play through Undertale + genocide can make the game a little creepy) so I recommend you do pacifist. It’s where you kill NO monsters. And you become friends with them and save them. Genocide is where you kill every monster in each area and certain characters will have tougher fights.
@TheLostEnderman I didn't even receive a comenr like that. RU-vid is weird about stuff like that, they probably put it in the "held for review" section. I'll give you mine, my discord name is the same as my youtube name, Kgstout00.