I am generally going to disagree with Albaby here.
(1) I think perception trumps reality and the media has done a good job setting the perception that both inflation and the border are Bidens fault and are a significant negative for YOU personally.
(2) The whole MAGA thing plays right into the natural tendency known as nostalgia.
(3) people respond to anecdotes much more than to statistics.
(4) A general belief that republican policies are better for the economy. When questioned most republicans will deny that the deficit goes up more during an (R) presidency, and that the stock market does better during a (D) presidency.

Back to anecdotes, I have a family member who switched from Biden to trump for just two reasons:
(1) All the crime being committed by immigrants, and Bidens inability to control/fix this
(2) Inflation. A belief that Trump will actually bring prices back down.

As somebody around here keeps saying... you can't fix stupid.
Alan