Maybe it was an instance of your skill was much better than your PP so you ranked really fast, but now your skill matches your PP, so you have to really tryhard for some of the scores, and you're feeling deflated because you're not used to not gaining ranks, and don't feel confident enough to make much ground.
You need more 100pp scores.
See if you can play https://osu.ppy.sh/s/53519. That was one of my first triple-digit-pp scores.
You need more 100pp scores.
See if you can play https://osu.ppy.sh/s/53519. That was one of my first triple-digit-pp scores.