At the start of June Putin spoke publicly about the war, and said that Russia was losing 1 soldier for every 5 Ukraine was losing. Official casualty numbers have only been issued by the Kremlin twice since the SMO kicked off, and nothing for over a year. However, you would think that increasing numbers of people are becoming aware of the reality as more and more wounded and maimed find their way back to hospitals away from the front.
Russians are traditionally reticent to question what the State tells them.