Trump has a knack for publicity and self-promotion.
Has a terrible chaotic management style.
Doesn't have many people he trusts -- mostly Jared and a general here and there.
Trumps worries about appearances and wants people who look the part (generals mostly -- he reportedly was opposed to hiring Bolton for a while die to his mustache).
Trump trusts his own instincts over experts.
And likes everything to be about Trump.
It's a highly idiosyncratic and stupid approach to the Presidency and life.
As for business acumen:
3 bankruptcies.
lost money owning a casino
fond of stiffing contractors
US banks stopped loaning to Trump
Ran a fraud/scam "university"