And for Trump why is he so desperate for another tenure even at his age and as someone whom has loosed in the last election? I think Biden will win whomever that will be nominated to contest against him.
Is not Trump running for President as "revenge" because the "humiliation" he suffered last time?
It may also have something to do with the multiple investigations he is under, in his mind, if he manages to become president again, he could try to use this power to get rid of the possible legal problems he could encounter after he finishes his second term, since I doubt he would get indicted as sitting president.
That is just speculation, of course.