So you agree that Russia can end this war by pulling back their armies from Ukraine territory.

Ukraine could end the war by accepting Russia's demands. Or the US and Europe could stop arming and funding Ukraine, that would also end the war. That would be a first step to mending the bridges they burned with Russia by starting a proxy war.

Why would Russia surrender when they are winning? Makes no sense. Losers don't get to dictate terms to the winner in a war.

The terms for peace are well known. They had already been agreed to by both sides during the Istanbul negotiations in 2022 before the British and the Americans went to tell their proxy to abandon negotiations and fight to the last Ukrainian instead.