The biggest defeat for rUSSRia is their inability to replace the vehicles, ships, supplies, and ammunition left over from the glory days of the USSR.
Not to mention the slow motion disaster of demographics where dead rUSSRian soldiers won’t be replaced. And where no one wants to move to rUSSRia then immigrants won’t fill billets in the cannon fodder ranks of the Red Army.
Honestly the US is in the same boat.
Our Navy is approaching half the size it was in the late 80s. The Air Force the same.
We are actively now recruiting immigrants to enlist in the Armed Forces. You could just replace USA with Russia in your post.