Republicans support a variety of policies -- different ones support different policies, but they include:
Limiting abortion.
Decreasing illegal immigration.
Increased access to firearms.
Lower taxes, especially on incomes.
The elimination of Section 230 protections for large tech platforms.
An increase in domestic energy production, with an eye towards energy self-sufficiency.
A decrease in H1 visas.
Increased school choice, through a combination of charter schools, school vouchers, and home-schooling support.
Increased policing, especially the enforcement of misdemeanor theft, vandalism, trespass, and destruction of property.
Increased enforcement of drug laws, especially pertaining to methamphetamines, heroin, and fentanyl.
A decrease in cooperation with China.
You may oppose some or all of these policy positions, but you can't reasonably claim that they aren't policy positions. I tried to give you a smattering from across different types of policy, rather than just things in the news recently.
Shouldn't need saying, but this is not my list of policy goals. I have opinions, but they're not relevant to a discussion of whether the Republican party has or has not got a platform.
Pre-Trump, maybe. The GOP is post-Trump now. https://www.theatlantic.com/ideas/archive/2021/01/conservati...
As far as "victimized cult mentality" goes, I really don't think Republicans rate, really. They mostly don't participate in the victimhood-industrial complex.