Perhaps it is you or we who do not understand Trump. Trump succeeds as president when he is himself, first and foremost. Being himself is what got him elected; it is what has made his first term in office successful for America and himself; and it is what will get him re-elected. Like you and me, Trump is free to exoress himself, unconstrained by previous presidential or political norms.
I know and 75% of it is good and correct. I guess just like Andrew Jackson, you get a great stateman, but got to take his mean SOB side as all part of the parcel.