Did the German Government, After WW2 ever apologise for the crimes against humanity By the Nazi Party and Hitler too ?

"During this period of partial German amnesia, West Germany and France nonetheless achieved a stunning reconciliation. The French scholar Alfred Grosser has argued that whereas in 1944 the French view had been "no enemy but Germany," by 1960 it had shifted to "no friend but Germany." In polls taken only 20 years after Germany's defeat, the French public identified West Germany as "the best friend of France." It is clear from the Allies' occupation policies that they valued German acknowledgment of past crimes....

The Social Democrats' electoral victories ushered in the "social-liberal" period, during which the West German left pursued its long-advocated agenda of atonement for Nazi crimes. The country's preoccupation with its own victimhood gave way to Vergangenheitsbewältigung, or "coming to terms with the past." Bonn prosecuted Holocaust perpetrators and expanded its reparations policy, paying billions of dollars to Holocaust survivors all over the world. It started preserving and memorializing concentration camps and other sites, holding ceremonies that mourned victims of the Holocaust, building museums that detailed German aggression and atrocities, and encouraging students and community members to explore their local wartime histories....

...After German reunification, the Germans began observing Holocaust Remembrance Day and -- following a candid national debate -- built the Memorial to the Murdered Jews of Europe in central Berlin"

The Perils of Apology

https://www.foreignaffairs.com/articles/japan/2009...

They have gone out of their way to make the crimes against Humanity common knowledge, also to apologize and attempt to atone for it.

Yes. Ever see the photo of Chancellor Willy Brandt on his knees at Auschwitz? That's just one of many ways the current German state has apologized and otherwise offered amends.

Not formally, I don't believe. Obama should apologize for his willful harm, actions and inactions toward humanity. The people who voted for him should especially issue an apology to this nation.

I have never heard or read about an apology Myself.

But they should not