Obama's debt numbers are quite literally-- NOTHING to brag about. He did come into office during a massive recession-- which did contribute mightily to it-- but he's certainly no Bill Clinton when it comes to the deficit. He might have been a Constitutional Law Scholar-- but he was no economist.
Trumps debt accumulation pre-COVID was on par with his predecessors. The only thing about that which gives pause is that he inherited a good economy-- and on paper it had become an even better economy pre-COVID. Normally-- that would create a decrease in debt. But thus far-- it hadn't in Trump's case. However-- thanks to COVID-- we're going to have a rough time ever giving him a 100% fair assessment, whether he gets 4 more years or not.