What has Trump done (politically) that’s so bad?

I’m genuinely curious this. I’m 16m and both my parents are strict Muslims, and they seem to be pretty fond of trump. Every time Trump comes up, they both say that “the media is influencing you too much” and “nobody mentions all the great stuff he’s done.” I am of the opinion that he’s a terrible human being, but I have nothing to say in response to his political actions