There's an entire intellectual tradition about this called Marxism-Leninism. There are successful Marxist-Leninist governments that exist right now, including the largest nation on earth. We aren't aren't talking about a fantasy here, there is is over a hundred years of paractice and two hundred of theory, if you're interested in our worldview

As you said, the government doesn’t work for us. I don’t know of any structure that truly does

Liberal democracy does not work for us - as in the people who are not in the ruling class. That isn't because of some immutable characteristic of all governments, it is by the design of the US government and all liberal democracies.

They were designed by and to work to the benefit of the ruling class - capitalists. That's why it doesn't work for us. Thats the key element and that's what we advocate for a change of. The only way to change things in through class struggle - and placing power in the hands of our class.

But the alternative is anarchy, and that’s not going to work either.

We have anarchists here and we keep the place non-sectarian. MLs would agree but not for the same reasons as you. Our disagreement is that we need the power of a state to safeguard the gains of a revolution against the global capitalist class and their state forces. Anarchists have a different view, but they understand the importance of revolutionary class struggle and disagreements aside, their theory of change is infinitely more grounded in reality than yours