You should read The Great Patriotic War as told by Russian historians.
Since most everyone agrees on the facts of WWII, they couldn’t come out and lie about events. But the way they were spun, making the USSR the unheralded victor of the war in spite of the Allies, was impressive.
What I learned is that truth and facts are restless bed mates, dependent on the needs of the narrator.
It’s a good read and surprisingly not filled with propaganda.