100% Libertarianism originated as a left wing movement in the 19th century. Right wing libertarianism didn't ooze out of the swamp till nearly a century later. In the mid 20th century. Post red scare when actual leftist were keeping their heads down due to fascist witch hunts. And unable to really call out the posers.
Real libertarians don't have a problem with government. They just believe that it should be focused on maximizing freedom, and access to it. Where the larpers are all about maximizing their personal freedom (privilege) and don't care if others have access.