Firstly, foreign nations interfering with our country wants chaos. Trump is chaos but they will latch onto anything to sew discord and craziness.
Second the Republicans don’t care they are voting for Trump period or against democrats period there is little to change their mind. Conservatives don’t have to do something to win they have to hold every one and anything back.
Thirdly, the left is critical thinkers who are trying for better so there is always dissent or people criticizing/arguing the best way to do a thing causing lots of bad will. Doesn’t help we don’t have a left party and have a middle party always trying to court to the right.
Lastly, there is tons of could been better should have done better. Democrats and DnC sucks. They have a bunch of old fogeys holding onto power and their donors want people who won’t change things to much. Doesn’t help the corpos where use to having zero lights shined on them under Trump and they can do whatever. Where as even if most of it was toothless Biden actually did a little bit and said a few things that upset the corps