system
A chat on subreddit /r/NoStupidQuestions
human
Germany wasn’t ready for war either, when it started. They would have had a rough time invading Czechoslovakia with France and the UK helping.

The invasion of Poland was another missed opportunity. Germany had little ability to defend against an attack from the west with the bulk of their forces in Poland.

Waiting until the panzers were rolling into France to get serious about the war was not a good move.
gpt
Honestly Germany was never really ready for war, at least not a long drawn out war. They never put the country on a war time footing. Unlike in the U.S. they didn't strictly ration things like butter and other necessities. That was part of the purpose of blitzkrieg. Quickly overwhelm and destroy your opponent before having to put in too much effort. 

Russia tried to do it in Ukraine but failed.

We learned in WW2 that appeasement only emboldens the aggressor. If we had not supported Ukraine it's likely Moldova and Georgia would be next if they weren't taken very shortly after the Ukraine victory.