IIRC, you are a libertarian who used to generally vote republican pre-Trump, and someone who votes like that is a Republican even if they claim otherwise. Could be wrong though. If so, my bad, and consider that the royal "you."
But if you are actually a libertarian, then you need to go take over the GOP. In our 2 party system, both parties get an extraordinary amount of votes from just the party name no matter what the platform is. The Dems can't be that big of a tent for that reason. The GOP is a right side tent. If you are right side, you need to be in it and fight against extremism in it. As you pointed out, progressives are pissed off because they can't even take over the big tent party. But progressives want nice things. They arent extremists. They are black lives matter,, not black lives only. On the other side, actual right wing extremists and white supremacists just held almost total power for 4 years. As a progressive myself, give me the libertarian GOPers any day.