Republicans don't have policy to run on. They pander to their base, while also laughing behind their back [1]. Their base votes for them because these representatives appeal to their feelings, even though the people they vote for are actively harming them (red states are finally, begrudgingly, adopting Federal Medcaid expansion funding because they have workforce shortages [2]).
Because of the electoral college, there is no way to fix this for presidential elections [3] and rural America is heavily overrepresented congressionally. States with resources can provide for their own citizens (California is the world's fifth largest economy, for example), rural America will continue to slowly die a slow death as young people leave for opportunity [4], leaving behind those with oversized voting power.
Your options are leave the parts of the country in decline, leave the country, or stay in decline. It's not great [5].
[1] https://www.salon.com/2024/03/05/-the-media-should-stop-trea...
[2] https://www.kff.org/affordable-care-act/issue-brief/status-o...
[3] https://demcastusa.com/2019/11/11/land-doesnt-vote-people-do...
[4] https://stateline.org/2021/08/10/shrinking-rural-america-fac...
[5] https://journals.sagepub.com/doi/10.1177/00027162211070061