Its hard to understand the blinding desperate need to win that is driving all this.
Not really:
1) It's an enormously effective fund-raising grifting tool. I think the latest figure I've seen is Team Trump has raised $170 million+ just since the election to "fight corruption".
Trump is of course leveraged to the hilt and nowhere near as wealthy as he projects himself to be, and has hundreds of millions in debt coming due fairly soon that he will be unable to pay. I strongly suspect some of the folks who will want their money are of the sort that don't turn to "Acme Collection Agency" from the Yellow Pages, who are of the sort that have their own decidedly less pleasant version of a "collection agency".
2) Trump is terrified of the looming prosecutions in his future, particularly state-level charges that cannot be self-pardoned away.
Once outside of the norm of "you can't prosecute a sitting president for anything", Trump will basically spend the rest of his life in one court case after another. Or a penitentiary. Or both.
3) There's the whole NPD thing, but that doesn't seem to fly on this site. But I'll just mention it for completeness.