Donald Trump gained the White House with the help of Putin, white nationalist thugs and
widespread voter suppression. He could never be HIRED for ANY significant federal position because he would never qualify for any level of security clearance. If he was to even request one, the response would be "This is a joke, right?"
Despite his constant claim that he is a "great" businessman, this is also a bad joke. The truth is that he survived in business only because he never ever ventured outside the safe confines of a family-owned business. By design, Donnie was always the ultimate authority, answering to no one. He never had to actually BE smart or right or wealthy: he only had to INSIST---LOUDLY---that he was. His arrogance, ignorance and obvious mental instability would never have been tolerated in any bona fide business environment.
And, do we even need to list the ways in which this self-described "wartime president" is not qualified for a military career? I think not.
So, where could Donald Trump at least "get by" in a world in which he was not born a multi-millionaire? What could he actually do that would earn him his daily bread? I think that maybe, just maybe, he could operate a small town bar with no more than 12 stools and a few tables. Not one of the nice ones: one of the disreputable dives where nearly all the patrons are not welcome elsewhere.
Such establishments are usually---in my limited experience, you understand---operated by the owner and he is "the law" within its confines. He controls who drinks, what they pay and when they've "had enough", which is usually when they run out of money. With such authority, he is always right, knows everything and is seldom contradicted. They are also invariably belligerent Republicans.
But, no, after further thought, I do not think Donnie would last very long in such a position. Even small town drunks would eventually turn on him.