Well, Libertarianism is really known as Classical Liberalism (don’t let that second name scare you away) and is grounded in the value of human liberty. I have no problem whatsoever with the Libertarian Party’s platform; it’s the LP’s misguided (IMO) prioritizing of lesser issues (legalized dope, marriage for the gays, etc) at the expense of the truly important issues such as limited government, states’ rights & federalism, free market economies, promoting the “non-aggression” principle, and the idea of self-ownership (and the self-responsibility that naturally follows).
It certainly doesn't help their cause when they
put forth a John McAfee as a POTUS candidate on their ticket. Their 2020 POTUS candidate (Jo Jorgensen) went out and courted BLM-friendly voters with her call to strip local law enforcement of military-style equipment.
For a few election cycles now, the libertarians best chance is to "embed" libertarian candidates & ideas into the Republican Party (Ron and Rand Paul, Justin Amash, Thomas Massie)
Some of this generation's great minds in the arenas of economics (Milton Friedman, Murray Rothbard), politics/academia (Andrew Napolitano, Thomas Sewell) and business (the Koch brothers) have deep libertarian leanings. Even some celebrities have espoused libertarian views, like Joe Rogan, Vince Vaughn, Mike Rowe ("Dirty Jobs" & "Last Man Standing"), Tom Selleck.