A case can be made for the indiscriminate Russian bombardment of Ukranian cities.
This is the result of orders from a central command, and the result is an attempt to hamper the ability to fight and morale of the Ukrainians by destroying civilians and civil society.
What has happened North of Kviv may just be the result of individual soldiers resorting to barbarism. If that is the case, those troops may indeed be guilty of genocide, but not the Russian nation.
We should be extremely careful with the legalities, one day it may come back to haunt us.
One of my neighbors proudly recounted the tale of how he and his comrades gang-raped a Vietnamese girl who was a prisoner of war. It was supposedly OK because she was "the enemy". In my opinion, that is a capital crime. But it is not genocide.