Do you have any proof for those scenarios?
Do you mean do I have reasons to believe that those are likely best case/worst case scenarios?
That Trump has continually lied about his net worth and the state of his business affairs is no secret. The NYT carried out one of the most thorough investigations back in 2018, although I’m sure you just dismiss this without even reading it:
Trump Engaged in Suspect Tax Schemes as He Reaped Riches From His Father
Here’s a read for shorter attention spans:
Ex-Forbes Reporter: Trump Has Been Lying About the Size of His Fortune for Decades
Trump made a few good real estate deals early on, and the reality show, which he secured by managing to convince a Forbes reporter he was worth way, way more than he actually was, and which rather ironically conceived as an idea to sell the Trump brand as it was rapidly going down the tubes:
The Inside Story of How ‘The Apprentice’ Rescued Donald Trump
Although he had already lied to them before;
Why We Took Trump Off The Forbes 400 During His Decade Of Tax Losses
Overall he made some good real estate investments, and he was a big success at playing his own fantasy self. Whenever he is actually involved in running anything for any period of time the result is usually a ballooning of (often unpaid) debt and consistent multi-year losses. He has a sizeable amount of debt due in the near future he is personally responsible for, i.e that he can’t just write off with yet another bankruptcy dodge. Given that he has various financial entanglements in places like Turkey, this may (or may not) indicate something like the worst case scenario - after all people with huge debts are rarely given security clearance for good reason, a lot of potential leverage there. Might that explain in part his kow-towing to Erdogan? Maybe or maybe not. That is what is meant by ‘worst case scenario’, i.e what might turn out to be true if people’s worst concerns turn out to be accurate.
In any case he is certainly a skilled liar, if not a particularly great businessman, so credit where it’s due. He’s managed to convince a lot of people that he has been way more successful in using other people’s money than he actually has been, that he isn’t a sex pest, and a whole range of other things.