There might be a lot but here are a few.
1) Richard Nixon and his problem with Watergate. That did not happen very well
2) Andrew Johnson who became President after Lincoln was assassinated. He tried vetoed the first civil rights bill. He thought this was a country for "White Men" Congress overrode his veto. He was the first president ever to be impeached. However he was found innocent by one vote.
3) Jimmy Carter, he was a good man, but had a hard time at the Presidency. The inflation rate was a little over 5% and went up over 14%, then he had to deal with the Iran hostage problem.
4) George Bush he had a lot of problems to deal with, but the biggest mistake of all was
President George W Bush declared major combat in Iraq over today and called the six-week war "one victory" in the campaign against terror.
After a dramatic cable-assisted landing on the USS Abraham Lincoln, which is steaming home with its crew of more than 5,000 from the longest deployment in three decades, Bush said the United States and its allies had won in Iraq.
"Major combat operations in Iraq have ended," Bush said in a televised address from the carrier certain to provide powerful pictures for his 2004 re-election campaign.
"In the battle of Iraq, the United States and our allies have prevailed."
I wish that was true.