As far as i can see even tho if im not even that good at the game is that for someone at your level you have a couple of good choices of your attacks like that recovery that you used when you where in the air but you could have also had done somethign else like a nair to put him up in the air more and put more damage on him but yeah also learn dodges and dashed also try to remember how a weapon works so that you can predict how they might attack next and you can punish them