“ I also don’t think that Socialism is always bad.” That’s where we part company. Socialism is defined as the system where “the means of production, distribution, and exchange should be owned” by the State. That means the theft of private property from formerly free citizens, and that is never going to happen voluntarily, so can only happen by violent, bloody revolution. Marxist, National Socialist, Communist or Trade Union Socialists may differ on details, but they all hate the rich and want their property for themselves. Socialism IS always bad.
I think you are hung up on the “Right-Wing = Fascist” meme spouted by the Left, so we maybe are not going to agree on that point. It is just semantics about the different things Nazis and Communists say, what they do is identical, and equally hateful.
Now for your quote"What this war has demonstrated is that private capitalism — that is, an economic system in which land, factories, mines and transport are owned privately and operated solely for profit — does not work."
In my opinion it proved exactly the opposite: Capitalist America churned out Ships, Tanks, Trucks, Jeeps and Guns in a production line bonanza that Nazi Germany and Soviet Russia could not match with their slave labour, centrally planned economies. Their manufacturers made vast profits doing so, but they got the job done. America made war materiel faster then the Germans could destroy it.
Apart from those points I think we actually agree on everything of substance: Totalitarian States where individual rights no longer exist are evil, but I grant that Hitler’s Socialism had a vile overt racism to it, especially the anti-semitism. The USSR was racist too, they just didn’t admit it, as they created a famine to wipe out Ukrainian farmers so they could be replaced with ethnically Russian peasants, or as they transported Cossacks and Eastern Europeans to their deaths in Siberia. No, their rhetoric was all about the Glorious Revolution.