Yes.

Off the top of my head:

1. Didn't gut the Federal government. This action should have been taken immediately. Yes, people had families. Guess what? Those same people that were not fired led to the situation we are in, and continue to push the agenda.
2. Jeff Sessions.
3. William Barr.
4. Jared Kushner.
5. Failing to immediately send in the marshals in GA, NV, AZ, MI and PA.
6. His Supreme Court picks.
7. Christopher Wray.
8. Failing to ensure the voting system (Looking at you Pence. You fucking faggot.).
9. Not completely and totally taking over the GOP in 2017.
10. Anthony Scaramucci.
11. Joint Chief's of Staff.

Now, after having listed that, President Trump was one of the greatest Presidents of all time. But, he is only a man. I think a significant amount of the mistakes that were made relate directly to his mindset. He is a business man, and an incredible one at that. If any of you have worked at a high level, with incredibly talented and driven people, you understand. I think ego played a significant role in it. I also think that he believed, like most business men coming in, that he would use the tools already in place to right the ship. Not possible with the corruption in the US Gov.

But, that's just my opinion.