That’s rubbish.
The US won by such a huge margin that we were not even interested in exacting the spoils of war - we didn’t need them. It was in our best economic interest to rebuild Europe and Asia into what would become our future trading partners.
Were we necessarily the good guys? Are we still winners today? Absolutely not, but those are different questions.
Our massive WWII victory codified the Military Industrial Complex, which proceeded to poison and corrupt the world with fake fiat currency and CIA meddling. We allowed all our institutions to be infiltrated by Marxists, Hell-bent on destroying the American dream of a self-governing Constitutional Republic.
America did lose a war, but it wasn’t WWII - it was the one after that - the propaganda war that hardly anyone even knows about.
We rebuilt postwar Europe with the Marshall Plan. It didn’t include Japan.
We did it to prevent a repeat of the punitive Versaille treaty, with its destructive reparations that paved the way for Nazism to rise to power.
And to turn Germany into a strong ally that could keep the Soviet Union from expanding beyond the Warsaw Pact’s borders.