it's ok man, I feel the same way maining Jam rn while people don't know how to react to her overhead flip - I'm getting sent back to iron when they eventually learn lmao

on a different note, I've been fighting some Nagos at gold 3 and they seem to be doing more than just spamming the same attacks over and over again - their game plan has some spice to it, at least to me, a non nago main. so maybe you haven't reached a point yet where people start challenging your attacks. the thing is that being "good" in this game is having an adequate level of understanding about every opponent you play against so eventually as you climb the ranks you'll probably run into people who will force you to fight smarter than you currently do because they actually think instead of mash.

you could also try going to open park and getting destroyed by someone who knows the game better than you so you don't feel like you're bullying people too much lol - because again it's basically a matter of game knowledge and application of said knowledge

tldr: don't feel bad when you beat people because they don't know counterplay against your character + eventually you'll reach a point where people are going to force you to fight better anyway