Of course. The Russians have not released estimates of civilians killed. Just in Mariupol an estimated 10,000 or more civilians were killed when the Russians 'liberated' the city.
The number of bodies in Mariupol is overwhelming. Petro Andryushchenko, an adviser to the Ukrainian mayor, estimated that 22,000 died in the two months of fighting. However, a person among several coordinating burials in the city who spoke on condition of anonymity said they believed the total was closer to 50,000.
https://www.theguardian.com/world/2022/jun/01/makeshift-graves-and-notes-on-doors-the-struggle-to-find-and-bury-mariupol-dead-ukraine
Mariupol: Satellite images suggest mass graves dug near besieged city
https://www.bbc.com/news/world-europe-61183056