Nazi germany was not "self-defeating" unfortunately, but it's own ideologically motivated ations directly led to its collapse. Any rational german leadership would have desperately been trying to avoid a war with the USSR, but the nazis just couldn't do that because they believed their own lies about racial superiority and anti-communism, which led them to thinking the Soviets would just instatly collapse to a german offensive. They also didn't "need" to make Britain an enemy, or go to war with an entire continent at once, or prioritize committing genocide over the war effort, but due to their completely out-of-touch understanding of reality all those things were deemed necessarry.
It created a society in which every individual’s function was to support a global war effort and if you didn’t support the effort (or you had a disability or you were part of an “enemy” ethnicity or you just kinda look at me funny) we immolate you in a big oven.
Nazi germany was not "self-defeating" unfortunately, but it's own ideologically motivated ations directly led to its collapse. Any rational german leadership would have desperately been trying to avoid a war with the USSR, but the nazis just couldn't do that because they believed their own lies about racial superiority and anti-communism, which led them to thinking the Soviets would just instatly collapse to a german offensive. They also didn't "need" to make Britain an enemy, or go to war with an entire continent at once, or prioritize committing genocide over the war effort, but due to their completely out-of-touch understanding of reality all those things were deemed necessarry.
Which is just not a functional society.