I think the main problem with the American system is the same problem with many systems around the world. It's mostly an "ol' boys' club."
Old, rich, white, male.
Typically people who meet those criteria, or at least 3 of them, have much more influence and hold more critical positions.
The former head of the US Coast Guard, Adm. Linda Fagan, a highly decorated and trailblazing leader was dismissed by Trump, the first commandant in history to be fired. Trump's reasoning? She was a DEI hire. Despite her credentials clearly showing her merit. The feeling for me is he's saying there can't be a woman in a position of power.
en.m.wikipedia.org
Second, the two party system down there doesn't work. No system is perfect, but there is no way only two parties can put forth platforms that appeal to every voter. I myself realize there are ideals from both sides that I agree with and ones I disagree with. Usually it comes down to which one do I disagree with more, rather than which one do I agree with more. Is that wrong? Maybe, but I feel like NOT having things I don't like is more important than having things I like.
For example, up here in Canada, out of the 10 provinces there are 6 ruling parties. At the provincial level there are several legitimate parties that can form government. Even at the federal level there are usually 5 parties that form government. Yes, there are 2 primary parties that always win, but if they don't get a majority they're forced to work with the smaller parties to get anything done. So there's representation from a more diverse segment of the population. Again, far from perfect, but slightly better than "bad" vs "less bad".
Third, there should be some sort of recall mechanism within government. I know that is voting, but I'm talking between votes. Four years is a long time and some governments can go really off the rails (Trudeau up here for example). I don't know what that mechanism is or how it would be triggered. I just feel there should be something.