As far as I can see, yes, Trump is the worst president in American history and soon he will destroy the presidency.
Unlike any of his predecessors, he is misinformed, a mendacious president who never make true promises. Apart from this, he always makes jibes at the leaders of opposition parties.
There are about 200 top political scientists of America who have voted Donald Trump as the worst president in American history ever. And according to the survey of 2018 Presidents & Executive Politics Presidential Greatness Survey, his ranking is too lower than other (with a score of 12.34 out of 100) disgraced president Richard Nixon.
One of the news publication also published an article, "Trump is a combination of crooks (Warren G. Harding, Richard Nixon), bigots (Andrew Jackson, James Buchanan), and incompetents (Andrew Johnson, George W. Bush)". After reading this statement, you can also conclude on your own about the presidency of Donald Trump.