Trump offered an alternative to corrupt / criminal / seditious power-hungry Democrats and Washington Establishment Republicans.
Republicans use to tell voters, "F* you, this is what we offer - which is not what you want, but vote for us or give total control to Democrats.'
Trump came along and said, 'I hear you, America 1st, & screw both of those guys.' He gave Americsns what they wanted... and it pissed off the Democrats, leftist extremists, exposed fake news media, Washington Establishment Republicans, and RINOS, like Lizzie.