There is a significant difference between Biden's and Trump's leadership:  

There is a significant difference between Biden's and Trump's leadership:

Trump pretends to be a superman, capable of accomplishing all things. Trumpists believe that as their rationale for supporting him. That's lazy and contradicts a conservative principle- self responsibility.

Biden attempts to energize American patriotism, but not Jingoism. Trump is a jingo as long as he doesn't have to risk anything.

Newly elected POTUS always lose favorable poll ratings in their first year, excepting the Bush presidencies and Nixon, oddly enough. No candidate can keep all campaign promises in that period of time, but some can rationally explain the issues.