When you check his story in Vienna, it's a crazy one. In 1908, a young man by the name of August Kubizek was a roommate of Hitler's. While Kubizek was learning music, Hitler was failing big time. He attempted to enrol at the prestigious art college there, but got rejected twice. Kubizek said: “Hitler was very moody, always angry, he was picking buildings out at random and he could not tolerate rejection,”.
At a time when Hitler was destitute and staying in various lodging facilities as an homeless person, he sensed the bad mood in the town. In those days, the mayor of Vienna, Karl Lueger, was using hate as a means of obtaining votes. This impressed Hitler, and he knew how to bring discontent people together to fault one group.
His extreme views were not totally overturned then, the tremendous shock you'll have to know this. In fact, he collaborated with a Jewish art dealer, Samuel Morgenstern, whose service he used to sell his post card paintings. Earlier, Hitler himself went to the doctor of his mother, Eduard Bloch, a Jew, and personally expressed his gratitude for the mother's survival.
The turning point of course was during the first world war. He had for the first time a real purpose in life as a soldier. In 1918, after a gas attack, he was sitting in a hospital, and the hail of great shocks hit him with the announcement of Germany's surrender.
He was extremely enraged. He chose to accept the myth propagated by politicians and Jews that betrayed the army from behind. At that time he selected for pure hatred, a nation, and began to do evil things. It was not something he had been born with, it was all human choice. I’d appreciate an upvote if you find it helpful and informative.