This.
Trump lost the presidential election despite improving the economy. That's unheard of in US politics. That's what's generally valued above all else. And it has to be noted that Biden's time in office is marred by being financially tough. I think I saw a piece on the BBC last week talking about the cost of living crisis there and how groceries had increased by 25% under Biden.
Then there's the class thing. Trump is in the elite class but he's also anti establishment. He attacks the establishment and the middle class managerial liberals who are mainly coastal based and democrats. The working class don't have daily contact with the elite, but they hate their bosses and feel looked down on. This is educational and cultural. Trump plays a classic divide and conquer hand.
And don't forget the religious elements to this. Christian America is alien to us. Trump is willing to give the Christian Right what they want. He doesn't represent the wholesome values of the Christian Right, but that's fine because he understands their values and supports their values and is sadly given a free pass because he's a man. They are willing to overlook his personal life 'for the greater good' of their values.
Meanwhile the Democrats pushing Critical Race Theory and Gender Identity is seen as an assault on freedom and racist to whites. We interpret this as being purely racist but it's not that simple. Many Americans don't seem themselves as racist and are upset at it being implied that they are and thus interpret Black Lives Matter as being a racist organisation which is a threat to society.
Finally you also have to understand the mentality of the US. It doesn't do European style soft socialism at all. Not even if you are Democrat. Thus people who are in dire circumstances are there because of three main things according to American logic - because they don't work hard, because they deserve it for poor life choices and because the President is managing the economy poorly (usually associated with taxing too hard).
It's far more simplistic and cold thinking that we accept in Europe. In Europe we see the value in public health because it reduces poverty and crime. The US doesn't make this connection. It just sees each individual as responsible for themselves. Western Europe moral values are tied to helping others and collectively looking after each other whereas US moral values are tied to religious belief or new ideas about race or gender. These are competing ideologies and world views that are crucial to understand - and actually never is grounded in evidence particularly.
Black Lives Matter was originally founded as a Marxist organisation. This can be thrown back at the Democrats. The irony being that the mainstreaming of BLM to a wider Democrat audience actually stripped these Marxist ideas out to a huge degree and left it with only the identity elements of the movement being pushed and promoted (because that's how terrified even Democrat America is of the mere concept of socialism).
Thus the values ordinary people have in a America are widely different to the UK. They seem the cost of living issues differently and look at Trump as representing and presiding over better times and the religious rights core see him supporting traditional values even if he personally is totally at odds with those values. He will give them their judges to protect their way of life whereas the Democrats are seeking to undermine many of their values.
Once you put yourself in that mindset it's easier to comprehend.