You accept that the future of America has nothing to do with conservatism. Honestly, there's nothing you can really do. Conservatism was never actually very popular with the country, the Republican party was largely held together with a mish-mosh of racism and identity politics of the South and mid-West (who are largely just authoritarians with no ideological foundation), the fact that your philosophy could be easily manipulated by the rich and powerful (who can fund candidates who agree with you to unreasonable degrees), and a smattering of single-issue special interests (creationists, anti-gay marriage, pro-lifers, etc). That's what bound the Republican party together and kept conservatives (rather than authoritarians, right-wing libertarians, etc) in control.
There's simply not enough people in the general public to support a Republican party with a traditional conservative ideology, let alone what's waiting for you over the next 30 years. The Republicans will now switch to authoritarians, but I suspect this is going to fail much sooner than the conservative (neoliberal capitalist and traditionalist) Republican party of the last 40 years.