I have watched a lot of presidents come and go over the decades. None have been faultless, obviously, but several have been largely successful. Oddly, the successful haven't always been able to win a second term.
For a long time Jimmy Carter has held the record for screwups in my estimation. However I believe Joe Biden has surpassed him with more than three years remaining in his first, and hopefully only, term.
Reagan was mostly successful, as was the first Bush, who couldn't win reelection. Clinton did chief executive relatively well but had many #MeToo problems.
The second Bush segued from the weak governorship in Texas to be a weak president, owned by the neocons. Obama was a classic affirmative action hire, and thus a bigger disappointment to Dems than to the GOP, who were happy he didn't do much.
Trump had good policies and accomplishments, so-so management skills, but turned off too many people with his flamboyant impresario personality. He thus became another who couldn't win reelection.
Biden has managed to drive up gasoline prices, throw the border wide open, embarrass both country and self with the Afghan debacle, muddle the Covid-19 policies, ally with America-haters and spend us into inflation. That is a lot to get wrong in less than a year.
Since I've been paying attention, Biden takes the prize as "worst in class." Most observers believe Harris could be as bad as Biden, albeit in different ways and without the excuse of senility.
The saddest thing is that we Americans voted for this particular set of losers and have no one to blame but ourselves. Our unfortunate nation is going through a bad patch with next to no leadership.