Some countries care more about land and resources than about their soldiers’ lives or citizens’ economic well-being, and that includes both Russia and Ukraine.
If Russia stops fighting, there will be no more war. If Ukraine stops fighting, there will be no more Ukraine.
Putin himself has repeatedly made clear that he denies Ukraine's right to exist and is determined to extinguish Ukrainian statehood.
Putin in 2021 posted a 5,000 world essay on why Ukrainian statehood was a historical mistake.