He didn't plan shit you utter useless withered old faggot.
Hitler was refighting WW1.
In actuality, if Hitler suddenly died on Sept 2, 1939. It's arguable that Nazi Germany could have won.
Hitler fucked up so many plans; implementations; designs and delivery of weapons and military hardware; and WASTED so much fucking money on utterly stupid ego driven vanity projects - that the allied HC called Hitler their greatest ally.
Things that Hitler directly fucked up:
Barbarossa
Battle of Britian/Operation Sea Lion
The Caucausus
The surrender of 6th Army/Stalingrad
The Me 262 and air war doctrine
Tank design
The Tiger I debacle
The Hitler boner for ludicrously monstrous weapons/platforms that proved to be absolute failures: see Big Bertha, Maus, etc.,
Sturmgewehr 44
AND SO MUCH MORE.
Which is why there were so many assassination attempts on Hitler's life.
Now fuck the hell off to Reddit you stupid fucking trannie.