What actions exactly have I defended? Awful, horrific shit on scales beyond our comprehension have happened in basically every war in human history, including the deaths of countless innocent civilians. But to count as a war crime, the deaths of civilians has to be intentional (or at least with some level of reckless disregard for the safety of civilians, the standards of proof for which would be extremely high in a war). I've seen no evidence put forward yet that the kindergarten that got shelled was shelled intentionally.

Russia's invasion of Ukraine is morally wrong (and as a sibling comment pointed out, the invasion itself may be a war crime). Deaths of civilians caused by Russia's invasion are not inherently war crimes in and of themselves. It's not like felony murder, where any death caused in the commission of a felony is instantly treated as a murder. Civilian deaths caused by a war of aggression are not inherently war crimes.