Lets see....
How many times did he file for business bankruptcy? Who bankrupts a casino?
Failed steak company. Failed wine! Failed Airlines. Failed mortgage. Failed magazine. Failed University ending in fraud settlement. Trump vodka. Trump Tower Tampa.
That is all private, and his alone. Lets look at the one thing he could have done, and did nothing. The Healthcare system in America. I am not talking about drug prices. He did nothing but gut the affordable care act instead of fixing it. Again and again, while doing nothing to improve the care of the citizens of the United States' disenfranchised, he focused on tearing the system further apart.
Stay in school. You will learn about his term in Future History classes.