Unfortunately, Trump didn't have much to choose from. Normals have been chased from all facets of Government, they have other options, and simply choose not to get involved in the pigsty that is modern-day government.
It was easy to see when Trump first took office with Reins Preibus as COS, followed later by Kelly, who recommended that liberal chick to replace him, of course Sessions who blew himself up, Tillerson at State, who disrespected Trump from the get go, then the toothless mad Yorkie, Maddis, after Trump ordered transgendered out of the military and he refused the order at once and on and on!
People like me have felt that Trump has placed many of the wrong people, too close to him, when he needed lots more like Pompeo, Mark Meadows, etc. now that he's nearing the end of his first term not only dealing with liberal enemies but many GOP, who have dragged their feet, allowing the loss in 2018 and only pretending to support when they only want to stay in the same DC Country Club and steal $$$$$ from the taxpayers!