How will Right-Wingers rationalize things getting worse under Trump? They'll just not even acknowledge they are.
I see this sentiment going around a lot, and I don't think people realize just how brain broken these people are. They already believe the economy changes the moment the election ends, even before the next person gets into office. They'll believe that Obama caused the 2008 Financial Crash even though that started even before the primaries were settled. Things got worse under Trump the first time, but they fully believed it was getting better and ignored anything to the contrary. Just remember how much they both celebrated him for the vaccine but also said it was evil Bill Gates microchipping to turn everyone into gynoid mind slaves with 5G or whatever.
De jure, they don't control what reality is and what people really experience, but de facto, reality is subjective and is easily malleable by those who have control of the media and information apparatus. A quote from 1984 (very original thing to quote I know) about this exact thing has always stood out in my memory -
“It appeared that there had even been demonstrations to thank Big Brother for raising the chocolate ration to twenty grams a week. And only yesterday […] it had been announced that the ration was to be reduced to twenty grams a week. Was it possible that they could swallow that, after only twenty-four hours? Yes, they swallowed it. [...] The eyeless crature at the other table swallowed it fanatically. passionately, with a furious desire to track down, denounce, and vaporize anyone who should suggest that last week the ration had been thirty grams. Syme, too-in some more double complex way, involving doublethink-Syme, swallow it. Was he, then, alone in the possession of a memory?”
Boomers and much of Gen X is already lost to reality, they'll already believe anything. The second half of the Zoomers and all of Gen Alpha are having their brains baked by AI while being indoctrinated by streamers and influencers. We have lead brain on one side and brainrot on the other, and these people will swallow whatever they are told to by their masters. Every source they have will tell them it's either not happening, or if it is that it's someone else's fault - how then can they even form a coherent opinion to rebuke it? That's what it really means to live in the Post-Truth Era.