What exactly was his agenda outside of nonsensical vagueries about "repealing and replacing" (with zero idea how to actually do it), building a wall (that nobody with a brain actually believes will a) happen or b) work)...what exactly was his agenda other than that? He basically just talked shit about other people personally and won because he wasn't a politician. The guy never had a real agenda.
Do you consider it a possibility at all that perhaps you just didn't and haven't listened very carefully? I ask this because he had the best platform/agenda of any presidential candidate of the last 40 years. Of course you don't have to agree with that but its impossible to say he had NO agenda.
Pull us out of TPP
Pull us out of the Climate Accord
Secure the border(build a wall; increase ice agents; crackdown on sanctuary cities)
Pick conservative SC judges
Low Taxes
Low Regulation
Bomb the shit out of Isis
Hold historical allies accountable
Pursue new partnerships and arrangements with countries like Russia
Repeal and Replace Obamacare
Drain the Swamp
Those are things off the top off my head. There was more than that but I'm forgetting them. And so far he has either done these things or has pursued these things. And he has done so while catching political hell for his troubles.
I'm not suggesting he has not made any mistakes, bad decisions, or done things I flat out don't support. But the idea that Trump supporters must abandon him to keep their self respect is just asinine. He's largely coming through for the people that elected him. Trump is delivering about 10x the MAGA that Obama delivered in Hope n Change.