Your candidate is a Messiah as a crusader but is crucified when in office; this has been consistent for as long as I can recall. The crux of it is that the 'best' presidents are always on the other side of the aisle ‘cause anyone can find fault with any regime, & that's democracy
Ruling a nation can be very complex; you'd be amazed to find that the positive or negative difference between your candidate of choice & the one you disagree with is scant. Sometimes the problem isn't the leadership but the job, & democracy doesn't make it any easier.