The U.S. has performed better than the rest of the world post covid and the people don't recognize it. The low information voters were always going to choose the guy from when things were good.
Things went to shit while Trump was still in office. There was a whole year Harris could have spent a lot more time reminding people about where prices made their biggest jumps and a million people died. And he told us to drink bleach.
It seems that Harris only talked very specifically about price-gouging and didn’t generally address inequality, jobs, etc. She was afraid of sounding like Bernie and too willing to lean right. And still got called a communist.