Not if you can't fund your war and your population back home start to see reality. A Ukrainian soldier is worth 10x a russian malnourished dog. Boots on the ground are worthless if badly supplied and poorly led.
I accept that to a point.
The Russian population won’t make a difference. They have either bought into the Special Operation or they won’t say anything for fear of arrest, etc. Nobody is going to challenge Putin and his authority. He will remain President of Russia until he dies or steps aside for another one of his chosen hardliners, which he will have a massive say in.
Families of the soldiers already killed or missing have accepted their heroic loss as part of the war. A Ukrainian soldier is worth 100 Russian conscript soldiers. But Putin and Russia can thrown another 100 Russian Soldiers at the Ukrainian soldier until they kill him.