I would recommend looking more into it. Libertarianism at its actual fundamental, and not the heavily skewed incorrectly labeled types being seen here, is about freedom of the individual from oppression of tyranny and inefficient bureaucracy. The ability to live your life without determined rules set forth by a governing body that has long forgotten the plight of the common man.
You can even take two seconds to look at Wikipedia for the aggregated definition and see it’s about liberty and personal autonomy. Often you’ll hear, I don’t agree with what you say but I’ll die for your right to say it. Libertarians don’t have to personally accept what you do, but they fundamentally believe the state should not interfere with it.
This is why rule of law and cosmopolitanism are such fundamental values, as if the state is not allowed encroachments on personal liberty, it’s left to the citizenry to use the free market of ideas in determining what is acceptable or not.
Ancaps are an entirely different breed and are extremist in their views. Conflating them is like conflating a Tankie with a Social Democrat.