There's been a rule of thumb with this war, what the Ukraine's day about Russian losses wounded, and injured are actually Ukrainian losses, wounded and injured. Same with military equipment when they say Russia losses it's actually Ukraine losses.
The Ministry of defence just look at what the Russian military defence says, then copies it but twist it to show Russia are losing. Before the fall, and surrender of Mariupol, they said the Russians couldn't take the city. The same with Bahkmut. It was drivel.
The problem anyone has with Russians losses is that it's only now that the Russian army are actually in the front line.
Mariupol was taken with Donbass militias with support from Chechens and a small, very small Russian army force. Mostly those stationed around Crimea etc.
Bahkmut was taken by mostly Wagner forces with limited help of the Donbass militias, who were mostly recharging their batteries before they have now entered.
It's now that the Russian military are the dominant force along the long front line. Wagner forces have entered the fray as has the Donbass militias, but not fully same as Wagner.
So any losses in the first phase, Mariupol, were Donbass militias and Chechens. The second phase, Bahkmut, were Wagner, Donbass and small amount of Russian regular soldiers.
Made up numbers for Russian losses are for inspirational propaganda. There's enough western journalists, and pro US people, around Russia to photograph grave. Same in the Donbass, there's enough western journalists there to photo cemeteries. But the huge expanding cemeteries in Ukraine, photographed and reproduced on the internet, is testimony to the collosal Ukraine losses.
The Ukraine propaganda of huge Russian losses is designed to show they are winning. But they're on their last legs around Avdiivka and now Krupyanka. The games up for the corrupt Zelensky, and his corrupt clique, to do the war bidding for the US Empire.