OK, here some actual advice (not stupid git guds). Try to learn to measure his frontal attack lengths and dodge always into the direction he's going with those frontal attacks so when he's finished with his attack you stand infront of his face - then you can damage him into his face for like 2 seconds. The slam on the ground also leaves some time to damage. Never go into long telegraphed attacks - it will KILL you. It will be some time to learn the distances, but if you get a hold of them it gets easier. When he's flying wait for him to dive onto you make a superman jump. For everything else run around like a chicken heal and dodge.