It’s true that I’ve never personally suffered for any of the bad deeds of the US government. There are several reasons for that, some nakedly political, but for the most part because when someone in the US government does something horrible it’s not officially approved nor is it accepted and lauded by the people.

Take Abu Ghraib, clearly wrongdoing on the part of the government. The folks involved were exposed, prosecuted, and punished. The revelations of the incident kicked off a top down investigation of how military interrogations are performed and a public report on the matter. Politicians were unseated and hands on perpetrators were imprisoned.

Contrast that with the current situation where Putin receives widespread support from Russian people for committing war crimes while invading Ukraine and the perpetrators were rewarded. I cannot think of any “worse atrocities” the US has committed in my living memory.

There are arguably several situations in US history that should have led to prosecutions that didn’t, such as how we behaved regarding Iraq as another commenter pointed out. I do bear responsibility for that with other Americans, but as you have pointed out we did not suffer the consequences, mostly for political reasons.