This is white right-wing bullshit. Basically, all your claim amounts to is whites feeling they are being left out because they have to compete for things and cannot get everything given to them.
Your last sentence gives it all away.
Whites are 60 percent of the population and 76 percent of the workforce. Whites are 80 percent or more of the management positions. So where in the hell are white people being left out?
This is just a white man whining because he can't get everything he believes he is entitled to.
President Biden stood on a picket line with striking laborers. He is the first sitting president to have done that in the history of the United States. Trump didn’t do it, and in fact, he showed up at a non-union business barking bad things about labor, yet he was the one who those like you say connected with the working class. Historian Eric Loomis gave Biden a higher grade on his labor policies than any president since FDR. The Biden/Harris administration awarded 36 billion dollars to save the pensions of over 350,000 workers when they saved the Central States Pension fund. This fund paid the pensions for warehouse workers, construction workers, truck drivers, and food processors. This looks like Democrat support for the working class to me.
Meanwhile, Trump is screwing the white working class, and you are in here running your mouth about what democrats have lost. All I can say is this: Democrats don't need to gain back the trust of the racist white part of the working class. Those whites have not voted Democrat since 1964.