he also believed his own propaganda like you do, and said Ukraine will win in May 2022, because USA and UK are backing Ukraine 
It did win. I consider pushing one of the biggest armies in the world back to where they came from a win. The war hasn't ended, but according to the Russians there was no war in the first place, so there's nothing to end, or is there?
It always makes me laugh when I remind myself that Russian TV channels were all screaming that there's no war just a little military operation that's going to end soon and months later they say Russia wants to negotiate with Ukraine but Ukraine refuses. Negotiate what? Take the remains of your special operation and GTFO to your side of the border!
Also, yes sure, Poland wants to share a border with the RF. What could go wrong?
As far as I know it does share a border with RF.