Please Help

Hi, I am a relatively inexperienced player and I have usually stuck with the easier champs in the game, like and such. I have recently decided to try to get better mechanically and also play some mobility-based champs, so I have been trying and I have never really used a champ who is highly mobile. How many games must I feed horribly play before I actually begin to do relatively ok with her? Also, any advice? It seems everyone I play against knows where to throw their skill shots to hit me every time I use distortion.