Russia wants to seize Ukraine. Will not work. Even if the West refuses to help Ukraine, the Russian army simply did not have the strength for it. The entire might of the Russian army, the whole world saw in Syria. The carrier with the engine on the wood and falling aircraft.
Russian army is the second strongest army in the world, while their Ukrainian counterparts would struggle to get included in the top 100 list. If the Russians want, they can invade the whole of Ukraine in a day or two. Be happy that Putin is not in a mood for such an adventure.
You say that because I don't know the real situation in the Russian army. You just repeat the thesis that inspired you Putin TV. Poorly trained army armed with the old weapons does not scare anybody. Nothing you can't do against Ukraine.