There are many like Trump — same attitude, same short comings — they read, but they neither absorb nor comprehend what they read. OK, lets exclude comics.

If the "Zero Experience Guy" in the White House would grasp just 50% of what's going he would
1. cut his twittering to 10% of the usual rate
2. quit his ranting every time he opens his yap
3. get down to work
As the German saying goes: "even a good excuse, doesn't improve a lousy job" The excuse being the Russian Investigation, the lousy job is what he served up to this point.
Basically Trump is finding out that politics in Washington are quite regulated, that is he can't adjust the procedures to his liking e.g. fire the whole bunch and be done with it. Even though the Reps have both majorities, rules and regulations that's what chafes Trump.