There are examples where US populations have banded together and voted in people who genuinely care about their interests (Bernie Sanders; AOC; et al). If US peoples of varying electorates actually organised and spoke with one another to endorse and vote in more of these people, change might actually occur.

The issue is threefold: the US population would rather not vote than seek out a third candidate who actually cares about them; the US does not have mandatory voting; and the concept of community has broken down and been sold to individualism so broadly that many in the US would rather vote in a candidate who harms them as long as they harm others than someone who would help them but also help others.