It seems to me that Trump deceived Americans. He promised he'd make America great. He didn't keep his promise. Now no one wants to meet him, and the leaders of States who have already met with that clown has lost interest in cooperating with America. It is a betrayal of American interests. I think he deserved impeachment.
What are you talking about, Trump is president for less than half a year. Do you think that rebuilding a nation is matter of month or two?
Trump is not a candy seller, he won't sell you sweet lies about how amazing USA is, instead he will try to apply a medicine, which tastes awful.
That is the reason he might be disliked by some people who have no idea how politics and managing a country works.