It's deeply dishonest to claim that a handful of deeply tragic mistakes are in any way morally equivalent to the systematic and relentless targeting of civilians that the Russians are engaged in.
The U.S. military has committed war crimes. They have all been prosecuted by the U.S. government. From Abu Ghraib to Clint Lorance to the Marine Snipers to Eddie Gallagher. There is no moral equivalence.