Might I ask, which specific decisions are you talking about? Please provide supporting evidence.
I don't write this flippantly. You may have some excellent points, but in this environment, I would love to read more than just a broad statement. This website is one of the last places where we might expect such a thing.
World Affairs - I suppose you could concede portions of the Ukraine to Russia. Those aren't my politics. Maybe you believe in conquest by violence, though.
Afghanistan withdrawal was Trump's plan. https://www.bbc.com/news/world-asia-51692546. I credit Trump with ending this conflicting. It should have been ended a long time before that. But he signed a weak deal in February of 2020 that left a lot political pain for his successor.
There were only 6000 troops left in Afghanistan, actually much less than that, when the date got there. It’s like, hey, let’s leave at the last minute with a skeleton crew and see if that isn’t chaotic. Trump wasn’t an idiot, he knew the position he was handing off to Biden. Biden had two choices, a chaotic withdrawal, or put more troops in for a secure one, but that went against what Trump agreed to with the taliban (so not really a choice). You know who the POS is in this story right?
You don’t withdraw the bulk of an army, leave a token force in place, and expect that to go well. You just don’t do that, and Trump the very stable genius he is, did. And it worked out well politically for him, so I guess it was smart.
Where to begin? I'll just mention a number of foreign policy failures since, not being an American, those failures of the 'Biden regime' (between quotes because it is highly unlikely that it was actually Biden who called the shots and way more likely for someone like Blinken to have been the ringleader here) are the ones which have caused most problems for non-Americans.
- the disastrous withdrawal from Afghanistan. Biden pulled out troops before getting out civilians, green card holders and allies. Not everyone was evacuated and billions of dollars worth of equipment was left behind for the Taliban to take over
- the way the Biden regime botched the burgeoning Abraham accords by turning their backs to the Saudis while opening up to the Iranians - why? All this achieved was the intensification of smouldering conflicts which begot the world the rise of the Houthi's, the 6th of Octoboer incursion by Hamas and the resulting carnage and more
- the way the Biden regime botched the situation around Ukraine with him hinting at a 'minor incursion' not being taken seriously. With the disastrous Afghanistan withdrawal and this weak-kneed response from the USA Putin deemed the time ripe for invasion
On the domestic side I can mention the 'border crisis' caused by the intentional import of millions of illegal immigrants, the failed energy policies, the mis-named 'inflation reduction act' and similar financial boondoggles which caused rampant inflation, the weaponisation of the justice department and the FBI which has led to trust in the judiciary sinking to a record low level, the similar weaponisation of the IRS, the authoritarian push around the SARS2 unpleasantness with the whole web of lies around both the origin of the antigen as well as the efficacy of the only allowed treatment regimes, the mishandling of the military which has seen record low recruitment levels since the regime has tried to push the military towards 'progressive' political goals, the endless parade of lies around just about any subject which cropped up from the 'laptop from hell' through the 'summer of love', the clear examples of corruption where Biden pardoned his family for their influence peddling, etcetera. There is far more to mention but this is enough for starters.
If you want evidence I'd invite you to do a cursory search on the 'net, you'll find tons of it. Be aware of the political bias of whatever source you refer to but even the most biased sources will be unable to hide the last regime's failures since they are so blatant and visible.