as an actual former pro player in actual GD, weird game.

Firstly, did you playtested your game? those jumps are so broken they feel AI generated. You cannot get in all holes of this structure, so you need to jump the first spike, land and jump the other two spikes at once. That's way harder than the rest of the level... wdym there's another one at the end of the level-
Also, the buffering mechanic is really weird, if I click while mid-air, even if by accident, and really far from the ground, I'm going to buffer no matter what. That's strange
Your game could also have more levels. Only one level? Also, the fact that your game looks good but the page of it is just plan itch.io, I have a suspiction your game might be AI generated...
anyway
