The Afghanistan war has been a difficult problem into which America was dragged 20 years ago. The entrance was unavoidable because America was attacked at the twin towers by Al Qaida which which the Taliban supported. In addition it was then complicated by a side war in Iraq. Iraq was an unnecessary diversion. George Bush was an honest president, but he did make a mistake in Iraq. However, in the end, America was able to exit gracefully from Iraq but not as gracefully from Afghanistan. Afghanistan had to end, and unfortunately the Afghan government folded when we left, but we eventually had to leave. The exit was initiated by Trump and finished by Biden. The Republicans laid the blame on Biden for political reasons, but neither party is guilty. Completion of the withdrawal by Trump would not have been any smoother than by Biden. It probably would have been worse.
