[Tasselfoot]

that might be your problem. you play one-handed. its the hardest way to play, so you'll have the lowest scores and the hardest time passing songs.

you might want to seriously consider switching to 4-finger (index and middle of each hand) or index. also, what scroll rate do you use? you should be reading around 550-650 bpm optimally. but, more than anything... practice.

good songs from the keyboard pack to practice on are Quasar, which is all streams... War Games or Geno's Woods which are both very easy... those are probably your best bets. stay away from Vanish ITA, Snow, Otaku Speedvibe, Cynic, Oi Punk, and the like.