Please, read. There is so much to learn that it would probably take years for someone to learn in detail everything the US (and the other western powers, -the "good" guys-) have done.
These are just the official war crimes: https://en.wikipedia.org/wiki/United_States_war_crimes
These are just 7 of the legitimate governments the US have overthrown: https://foreignpolicy.com/2013/08/20/mapped-the-7-government...
More in Africa: https://www.bbc.com/news/world-africa-36303327
This one is dear to me, the CIA activity in Italy to interfere with our democratic process: https://en.wikipedia.org/wiki/CIA_activities_in_Italy
You can also check the list of the human right violations committed by the CIA: https://en.wikipedia.org/wiki/Human_rights_violations_by_the...
Let's forget about Guantanamo eh?
Bonus: The cost of the post 9/11 US wars in the middle east: https://watson.brown.edu/costsofwar/costs/human