Why didn't the Germans develop the atomic bomb before the Americans in World War II?

The reason why the Germans didn't develop the atomic bomb before the Americans in World War II is:

Originally, Germany had the most talented people, but Hitler wanted to have a hard time with Jews, which led many scientists to flee to the United States, and Einstein was forced to the United States in this way. Even so, there were many famous scientists in Germany. Otherwise, why did the United States desperately rob German scientists after the war?

After Hitler drove away the Jewish scientists, there appeared a Heisenberg who was no less than Oppenheimer, the father of the American atomic bomb. Even the two scientists who discovered atomic fission were in Germany at that time. And the most important uranium mine for making atomic bombs is enough. After all, most of Europe is in the hands of the Germans, and some uranium can be obtained enough to make an atomic bomb. Some uranium was also sent to Japan, but was intercepted by the US military.