The US nearly completely wiped out the indigenous people who lived there

When European settlers arrived in the Americas, historians estimate there were over 10 million Native Americans living there. By 1900, their estimated population was under 300,000. Native Americans were subjected to many different forms of violence, all with the intention of destroying the community. In the late 1800s, blankets from smallpox patients were distributed to Native Americans in order to spread disease. There were several wars, and violence was encouraged; for example, European settlers were paid for each Penobscot person they killed. In the 19th century, 4,000 Cherokee people died on the Trail of Tears, a forced march from the southern U.S. to Oklahoma. In the 20th century, civil rights violations were common, and discrimination continues to this day.

Multiple millions of people were captured in Africa and sold as slaves as well

Broad estimates of US war victims range up to 12 million (a liberal estimate), whereas the Nazis killed over 13 million through mass killings alone (eg the Holocaust + exterminated minorities). The Soviet Union alone lost 20 to 27 million depending on who you ask.

In addition to the 500k-millions of native peoples and hundreds of tribes the US systematically nearly eradicated, lets take just a few more examples.

• Vietnam: 1.5M killed
• Laos: 300k
• Iraq: 1M
• Indonesia: 500k-1M
• Korea: 500k
• Japan: 200k-1M in civilian bombings

And I haven't even started on operation condor and latin america yet.

Even if you take the most extreme interpretation of US responsibility possible (eg adding another 1-1.7 million people for "luring" the Soviet Union into attacking Afghanistan), you don't get to 25 million

Bullshit. One single US (+EU) policy, economic sanctions, has murdered 38 million in the past 50 Years and keeps murdering 500k yearly. One single policy.

Simply trying to compare kill counts like history is call of duty only serves to dehumanize the victims.

In my view, just one aspect of the U.S. makes it the worst country ever: its role in the ecological crisis. The us is like three corporations in a trench coat, and a us corporation knew about anthropogenic climate change and kept that internal, and that's just one instance of fuckery where there are plenty more. That's the international elephant in the room which nobody seems willing to talk about. We need to also consider all the future atrocities as well as those in the past.

A huge amount of deaths are directly caused by US sanctions in numerous countries.
You should count those

Someone didn't read a history book.