Well it depends what you want, city, country, mountains, beaches etc. Pretty sure you can find all of that in red states. You just have to decide what’s important for you (apart from being red) and narrow it down that way.
Also keep in mind that even red states will have patches of blue in them especially around big cities so if you want to avoid ANY blue then you may be limited. Maybe places like Wyoming, Oklahoma, Utah would work as they are about as red as you will get. I personally love Wyoming and if I could deal with the crazy winters I would love to live there.
Obviously a bazillion people are moving to FL and it’s a fairly red state compared to CA but it does have a lot of blue especially around South FL. Same with Texas I believe. Most people consider it a red state but it has a lot of blue in it.
Found this with a quick search might be a starting point
https://worldpopulationreview.com/st...ublican-states