It’s possible to want something without wanting to live in a system where there is a nanny to enforce that thing. Other means of enforcement exist, such as free markets.

Yes, but there's really not very many libertarians left who haven't cast their lot in for Republican support, resulting in the present situation. Not that there were many to begin with.

You might find it useful to distinguish between right and left libertarians.

All my anarchist (left libertarian) friends are pretty consistently opposed to state and corporate surveillance. There is plenty of theory in a canon of literature that goes back to the mid 19th century, even as there are many subgroups and spurs off that general line of thought all with their own sets of (usually somewhat) consistent lines.

If you want something short and brutal, I am a fan of "Desert" by anonymous, but "A Utopia of Rules" by David Graeber is not a bad thing to read and probably closer to a popular line. Or the CIA-Coded Yale academic James Scott has a lot to say, "Two Cheers for Anarchism" and "Seeing Like a State" both seem to have influenced a lot of people.

Historically "right libertarians" (the US Libertarian political party, for instance) have been, uh, "less consistent" in their thinking, so you might have a hard time finding anything that looks like a "philosophy" in that branch of "thought". Plenty of goofy-ass ideas, but little consistency except a strange ability to begrudgingly conform to GOP politics at the end of the day.