It's less complicated.
He looked on winning the nomination like a hostile takeover in business.
Buy the stock, get the options, fire the board, walk in Monday morning and the managers line up to kiss the ring and get new orders.
The swamp is nothing like that. Nothing at all.
Every time he said, "Drain the swamp", another elected Republican swore before whatever demon they pray to to see him destroyed.
HOW ON EARTH could the Republican majority in Congress approve of, go along with, fund and stand aside for the Mueller/Weissman investigation?
He never, ever should have tried to be a Republican (which he obviously is not) after he took his hand off the Bible.
He trusted them, or thought he could buffalo them, and they stabbed him in the back.
The way Trump did it is the only way he could have won the election. It's now our job to kick out the Anti-Trumpers from the Party and mold the GOP into our image.