A missed button?

What can we possibly do when, whilst fighting, for example, against the towers, we are about to attack them with a special move, and we wanna give up on the special attack to give them a minor attack to break the shield first? Like is there a way on going back or since we chose the special attack we need to forcibly use it?

2nd question: All the staff says " A. I. never cheat". I even believe. But in game you can show the next 3 rows that will fall over the frame of the game, would be fairer, because there is a waterfall of skulls in the raid boss, which does not know where it comes from and how it is so assertive, can almost kill our entire team easily.

Thank You.