It makes sense to hear that you like Deltarune better than UnderTale since I know that you like assorted troubled teens that you can ship with each other in a variety of configurations and the weird, complicated, trapped together relationship between Kris and the player probably helps too.
I'm also kind of worried about being able to beat the bosses in future chapters. This chapter was already fairly difficult for me. I am not good at videogames so I might end up just watching lets plays for future chapters if they get any harder and that's a considerably less immediate experience.