Both are awful ideologies. Conservatives support every single imperialist and reactionary movement internally and internationally you can think of and are general bigots. Libertarians are basically what Engels called “bourgeois socialists”, they are critical of some aspects of capitalism (even if they call it “corporatism” not capitalism) but at the end of the day they are on the same boat as fascists in that they want to sell out the proletariat in favor of giving the petite-bourgeois more power.