Why won't 350 million American citizens do something about their own government first, before engaging in moral grandstanding in respect to other countries? No, this doesn't mean just getting rid of Trump - the entire political spectrum is complicit in millions of deaths every decade.
US calls itself a "Democracy", so you're supposed to be more empowered to make a change than an average Chinese citizen.
You're asking a very tricky "what if" question and implying a better result without evidence.
There are only 3 countries with the potential to become superpowers in the modern age -- USA, Russia, and China. Hegemony by one of the three is inevitable.
It is up to YOU to provide proof that Russia or China would be better choices.
President Roosevelt said "speak softly and carry a big stick; you will go far." The US foreign policy has gone very far with that idea. A large military then economic pressure is what led to the collapse of the USSR. The same tactic has kept North Korea, Iran, and other despotic countries at bay for decades.
Today, Trump and Biden both have endorsed a similar approach to China. Build up the military presence around China and pile on economic pressure until they collapse (trying to walk the fine line to avoid war).
Unlike the US, China and Russia/USSR have killed tens to hundreds of millions of their own people. Do you really think there would be fewer deaths if China or Russia were the dominant power? If they're willing to kill their own so casually, they're going to be even more barbaric with foreigners.
I'd ask again, do you have any proof that the alternatives are better?
US calls itself a "Democracy", so you're supposed to be more empowered to make a change than an average Chinese citizen.