This video from a Russian soldier shows the carnage they are suffering. All of the bodies on the ground are Russians, they have held that area for a long time.
Note that the Russian soldier states that the Ukrainians are on the slag heap. Your map shows that as Russian held, but it isn't - at least according to a Russian soldier walking along and talking about it, and showing it in his video.
"the [Ukrainian] team is good, they pick up the dead. Our dead first of all."
"No one's gonna risk their lives for Ukrainians, obviously, they'll be picked up last, when it gets safer."