Libertarians and libertarianism are not an alternative political party or a different ideology or political philosophy.
They are anti-government, any and all government, because they are against any and all laws and regulations that stand in the way of their bottom line. Libertarians are a disgruntled and angry group of selfish, loathsome, economic opportunists. The only thing they value is money, their money. If you are a regular person who thinks that libertarianism is a valid alternative form of governance and you do not have exactly the same goal of tearing down the government or you do not follow lockstep in their behaviors and beliefs, you can never actually be a real member of that dystopian group. At best, you would only ever be a peripheral inconsequential number.
Libertarians and libertarianism are not an alternative to political parties or ideology. If they are anything, they are anarchists. If you think anarchy is good, libertarianism might really be your thing.