Most Nazis, which is different to most Germans, got away with what they did.
There was no justice in some Nuremberg and other post-war legal proceedings, any more than there was with the Japanese. The trials were in some cases little better than Hitler’s and Stalin’s show trials.
Sure, some big fish got tried and punished, but they couldn’t have existed without millions of little fish, almost all of whom got away and who were the real problem, collectively and individually. Goering wasn’t in attendance at every eviction or street bashing or destruction of the business of some poor Jew. Nobody ever got dealt with for that.
The marvellous thing about post-war Germany was that there were no Nazis left. The only thing more marvellous was post-war France, which had had its Vichy tongue as far up Hitler’s arse as it could manage, where during the war (the main years of it that France wasn’t involved in) the bulk of the people continued to live satisfactorily under the Nazis but, magically, after the war the whole population had all been members of the Resistance. Nobody in post-war France had any idea who, for example, had been putting French Jews on trains to the gas chambers.
There was no more reason to punish Germany for its conduct than Vichy France, because not everyone in those nations was responsible for what happened.
There was every reason to punish the individual Germans and French who supported the Nazis for their conduct, along with oft forgotten others who couldn’t get their tongues far enough up or quickly enough up Hitler’s arse in the Balkans etc.
But it was just too hard.
Plus the Americans needed Wernher von Braun etc, not to mention the animals from Harbin etc.
The worst individuals who were most closely connected to the worst acts usually got away, as did the average people who just had a bit of fun beating up Jews and informing on other people who went to the concentration camps, while the figureheads went down symbolically. And left the countless real bastards in the post-war population.