He didn't debate. Biden answered the questions. TRUMP DIDN'T, with one exception: when asked for THE THIRD TIME if he would accept the election results if he lost, Trump said, after having to stop and think a moment, "Absolutely. If it is a fair and honest election." Which means if he doesn't think it is fair, more insurrectionist will rain down. The rest of the time he spent deriding Biden ans spouting bullshit.