Wagner takes big losses.
According to CNN, about 1,500 out of 5,000 Russian Wagner mercenaries in Ukraine have been killed. The real denazification in Ukraine.
Good reporting here, CNN has had some great features on Wagner. They are effectively Putin's private army that he sends around the world to commit atrocities. They are some of Russia's most experienced military units as a result, but they engage in some of the worst atrocities. They've tortured and murdered civilians in Syria, Mali, the Central African Republic, Ukriane, all over the place.
In Ukraine they've been used to shore up various Russian lines in roles they aren't accustomed to and as assault troops incurring heavy losses. As a result of their losses, Wagner has started to cast a wider net for recruiting, often now taking men without any military experience and prisoners.