I'm not sure why you think Americans hate Trump when Americans are the ones who elected him president. If Americans hated Trump, he wouldn't have gotten half of the vote.
Some Americans hate Trump, others love him, others are in between.
Those who hate Trump, I think, have a mischaracterized perception of him and/or are mad that their candidate lost. Many of these people who hate Trump can't understand how, after 8 years of a Democratic president, that other people have differing opinions and did not agree with everything that happened under Obama.
The media did not help at all with this mischaracterization of Trump because most of American media is liberally biased, due to the people who own the stations being liberal. The only major news station in the USA that is conservatively biased is Fox News. Sensationalization of Trump by the media, both public and private via Twitter and Tumblr accounts, for example, spreading fake or exaggerated, not 100% factual characterizations of Trump. And what happens on sites like Twitter or Tumblr? You only follow who you like, you don't get the full picture of stories, and ideologies become more and more polarized with people unable to see the middle ground.
I voted Trump. Do I love him? No. Do I think he's perfect? No. Do I agree with all of his policies and actions? No. But is he doing the things that I voted for him for? Yes. So do I like him? Yes.
I have limited family in the USA, but besides two people in my family, including me, they all voted for Hillary and are Democrats, so I am familiar with both sides.