What worked for me was cutting some of my weakness completely from the game for a while.
I began Injustice as a Lex Luthor player, and I kept getting smashed up by people baiting and waiting for my corp charge. I tried to be careful and do it on reads or punishes, but it still happened.
So I got angry and for a couple of days, I removed the entire concept of Corp Charge from my game. I forgot it existed and played the character like it didn't have it.
Thus I had to work harder on getting in, on punishes, and overall on the other lacking elements of my game. Then, after four days, I got back using corp charge too, and I have to admit, it was a major improvement in my game. I was able to beat a lot of my friends that I couldn't before, and they started to fear the charge as they should, and stop baiting it because they'd get blown up.