Of course he hasn't learned anything. Trump has never actually really been held accountable for his actions for his entire life. He has always done what he wanted and got away with it, and he expects it will always be that way.
Learning things isn't little Lord Cheetodicks strength.
There is no reason why he would.
He showd the same sociopathic tendencies as career career criminals and should never have passed a mental suitability test to even run for high office.