In the USA, for a variety of reasons, many people suck at debate.
The Race-Card: #1 Reason a black in the USA will suck at debate
A key weakness for many blacks who suck at debate is a pitiful dependence on the race-card: The idea that others must inflate a weak-minded black person’s argument, or at least inflate the black person’s ego–as some kind of quasi-reparations for slavery; even for blacks for whom such reparations would not be deserved. Meanwhile, some hippie once said, “You can either get bitter, or get better.” And those weak-minded cowardly racist black hypocrites who insist on being coddled via their race-card: They are, to say the least, great examples of bitter.
The Vicarous-Card: #1 Reason a white in the USA will suck at debate
A key weakness for many whites who suck at debate is a pitiful dependence on the vicarious-card: The weak-minded idea that they must be right, or at least better than virtually all non-whites, because some other ‘white’ person accomplished [whatever] at some point in the past; or that some collective of ‘white’ people jointly accomplished [whatever]. Meanwhile, nearly none of the sources which such whites cite is, was or were a person or persons who ‘identified’ as white–much less did they draw their motivation or sense of self from such an identification. Else, to the extent that some Thomas Jefferson or another did value such an identification, still it did not, no matter their own suppositions, govern their character or conduct–so long as they were socialized sufficiently as to excel the self-awareness of an anteater, etc.