There is a difference between war and genocide. I wouldn't have actually been mad if the illegal war in Iraq had had consequences for those nations taking part in it, although I think unfortunately it was one of those things that once they'd started you might be better for everybody to finish, which is different to the Russians in Ukraine where the best thing that could happen for both sides would be for the Russians to leave immediately since they haven't overthrown the Ukrainian government.
But regardless, the Americans and British weren't in the dock in The Hague for the forced deportation and indoctrination of children. They weren't systematically attacking civilian infrastructure, including where they knew hundreds of women and children were sheltering, they didn't openly massacre hundreds of civilians in the street like in Bucha. They didn't plan to use concentration camps to subdue the population once they'd taken the capital.
I absolutely think some or all of the western powers in Iraq and Afghanistan must have committed war crimes, and shamefully some of them were even state sanctioned ones such as the torture in "dark sites" or whatever they called them, but the scale is totally incomparable. I'm sure war crimes happen in all wars but they're not supposed to be an integral part of the State's strategy.