Germany was beaten by all of the allies.
It all boils down to .... Ah, but he DIDN'T.
Hitler was a terrible Commander in Cheif. He did not accept or understand the meaning or reason for a tactical retreat on the battle field and towards the end of the war he lost whole armies to his stupidity.
The Brits were at that time and before that a very proud and quite arrogant people... look what they did in the 19th century... owned half the bloody world.
For them to submit to the nazis would be unthinkable. That is another blunder Hitler made... thinking that the brits would join them -submit to them.