I feel like the undertone of this question is "clearly you don't know what the Dems have done, otherwise you'd feel differently." Maybe I'm way off base with that, but there isn't any legislation that Dems have passed during Biden's term that even comes close to undoing or reversing the damage of the Trump presidency. Feel free to argue your case, but I would put special emphasis on these points:

1. The repeal of Roe v Wade
2. The appointment of 3 conservative justices (which additionally led to the repeal of affirmative action)
3. An insurrection that has not resulted in any major convictions against Trump, his family, or his lieutenants
4. The death of a million+ Americans from a deadly pandemic that was politicized because of one man's massive ego/possible Russian ties
5. Massive inflation caused by huge bailouts and tax breaks for the wealthiest Americans, followed by shrink and greedflation. American corporations haven't shared any amount of the burden they caused. The Dems did pass a 15% minimum corporate* tax rate, but this is band aid on a much larger problem, because this tax rate will just be repealed in time. These companies need real punitive action/jail/anti-trust laws being used against them.

I'm sure I missed a couple, but it is asinine to think that anything Joe Biden has accomplished has "fixed," or even started to fix, any of these things.