Message Russia is not fighting at full capacity
Such information spreads in anonymous pro-Russian Telegram channels. First, thanks to such statements, Russia is trying to justify its defeats in Ukraine.
They said that the Russian army had not yet used all its forces, methods, and weapons, so the Armed Forces of Ukraine managed to give them a decent rebuff. In particular, we are talking about the well-known "taking Kyiv" in three days and other unsuccessful operations of the Russian army in Ukraine. Secondly, such messages also perform the function of intimidation.
For example, if you do not surrender and do not make concessions to Russia, the Russian army will fight even more fiercely. However, the Russian military commits war crimes in Ukraine daily: they destroy infrastructure and kill civilians. The fact that the Russian army is suffering losses and gradually losing ground in certain locations is not because it is not fighting at full strength but because the Armed Forces of Ukraine are repulsing it with dignity.