Orwell said as much. He wrote "1984" as a warning to his fellow British Socialists after fighting in Spain, where he witnessed the brutal, deceitful tactics of (((Bolsheviks))). Of course, his fellow comrades "cancelled" him after its publication and he was kicked out of the "cool kids club."
Goebbels famously said that if a lie is repeated often enough it becomes as believable as the truth, but that quote is almost always taken out of context. He wasn't saying that he was the one doing that, he said that the jews were the ones doing it.