I want to like this game. It's not impossible.
But while there's difficulty that comes from the game itself, from the speed and the rhythm of the incoming pieces you have to dodge, your greatest nemesis in this game is an extremely sensitive set of controls. You will have times where you lose because the cursor overshot, and times where you lose because you overcompensated and didn't move far enough.
These two things, by far, will comprise the majority of your losses, as opposed to just not thinking fast enough.