Lets pretent Hitler was never born and the Weimar was in power.
As soon as you do that all events which follow change, so you can no longer use the same history for the hypothesis, since all of the events that followed were dependent on Hitler. No Hitler = no 1939 invasion of Poland. Other events maybe, but not the same. For all we know if Hitler hadn’t been born, Germany may have been invaded by Russia and the cold war may have been between a German victor and the US.
Hypothesis and theorizing aside: Germany was defeated in North Africa and Stalingrad at the end of 1942 / the start of 1943. At that point any chance of an Axis victory was lost (the Japanese were also experiencing reversals of fortune in the Pacific). The causes for the loss may have started earlier, but that’s when the problems created earlier became physical fact.
