Does anyone think Russia would offer to get nothing in exchange for an end to the war? Of course they will want to keep what they currently have in exchange for not destroying even more of Ukraine.
Without any big wins by Ukraine, why would Russia be persuaded to negotiate? For Russia to just repel an offensive by Ukraine would be seen in Russia as a victory, IMO.
Meanwhile, Ukraine is getting destroyed bit by bit, not Russia, so they have more to gain by negotiating an end to the war.
IMO, the end of this war will happen when one side is unable to continue ( without any change in the status quo re western direct intervention ), given they both have said they won't negotiate.