Oh, well you don't need to play Paladin with others necessarily (there are ways to solo level it such as beast tribe quests, daily hunt bills from the hunt board, FATEs) and nobody would know then if you were just press 1 button to keep it simple.

Then in the solo duty the main benefit of Paladin is it can survive better than DPS or healer, and also heal almost indefinitely with Clemency. It may not be necessary to bother with this because you said the problem was in the first part with Zero, rather than the second part with your character. But if you struggle in the second part, a tank or healer could be useful and nobody's going to notice limiting what you press/look at on it since it's a solo duty.