Four years to fix a global pandemic and undo some of the trump admin damage.
That was the bipartisan infrastructure act to shore up stuff like roads, bridges and more, the IRA to address inflation, climate goals (freed up a ton of money for green infrastructure, replacing outdated equipment at factories like gas smelters and furnaces) and more, the CHIPS and science act to counter china and restart manufacturing here in the US, as well as smaller stuff like debt relief for students, consumer protections against banks and airlines, and repealing DOMA via respect of marriage act for interracial and queer families.
In addition to conquering covid and rescuing a crashing economy in 2020. He realistically did most of this in two years because Republicans blocked them at the midterms.
Not to mention a lot of anti-competitve and merger blocks that would have fucked our country, like having one grocery store brand across the entire US. (These will probably go through in a trump admin)
He wasn't able to get it all done, but he had one arm tied behind his back and still got a decent amount done before they got hamstrung.
That, and your state and city elections matter and might be direct votes, which matter a ton now that the government is going to largely become permanently scarred and damaged for decades or longer.