i just bought Aurelion Sol And..

i was against fizz, thou i couldn't do anything to him, i end the game with 1/12/26 score, we won because my botlane was ok, Should i keep learning him or ? it doesnt seem he have lot of dmg, and i just think he is squishy running back a bit too late. his E canceled if he got any dmg, the only good thing when he use zhonyas and his stars keep hitting enemy, the ult is a bit hard to use, you need flash everytime, to make good start. is he really worth playing? it doesnt seem to me any interesting about him.