True, Fascism is nationalism gone wrong. It's basically an oligarchy, fascism being a way to facilitate it. Socialism is just a little right of Communism which is the extreme left.
Rights of the State come first in Communism, and everyone in the society is a busy little bee serving the whole.
That's great and everything until you realize that
1) if our country were to become Communist ( or Socialist) today, the same people running our country now would be running it then.
2) What if you disagree with something? There is no room for dissent in Marxism.
3) a look at the Socialist nations around the world should deter any thinking human from pursuing it.
4) There is no inherent flexibility. It is an oligarchy. There's no way around that. Our system of government is far superior in that we can make changes happen. It takes people getting organized and working together, which isn't happening right now. But it could happen.
The initial intent of communism was a utopia, with the willing sharing of everything, and with zero need for government. Marx also proposed a “socialist state”, or temporary control by a centralized government, to help us get there. Lenin had this in mind.
Of course, this goal was an impossibility for multiple, obvious, reasons, so it never went beyond that, and instead deteriorated rapidly under Stalin.
What ended up was nothing that Marx envisioned of course, and instead demonstrated why utopias never manifest. Human nature simply does not allow for it.