Am I progressing too slowly?

Guys, I've been overthinking this for a while

I've been playing for like a month and a half or 2 months idk, I don't have much experience with rhythm games and I don't have a sense of rhythm either. I've been playing with hard and started playing on expert 2 weeks ago and the highest level I cleared is 25. I wanna know if I'm too slow like am I falling behind? I feel like I've been playing for a while and still didn't even try to play on master.

Also I Hardly could clear levels 24-25 on expert like it takes me a bunch of tries, but 2 days ago I got a healer card and now I can clear them easily and now I feel like I'm cheating, is it though?😭

(I apologize for my English 👉👈)