The main issue is NATO. If Nato leave the Ukraine and doesn't make any deal with Ukraine so the Russia will skip the War. And if it continues so the crisis will never end.
This is completely and utterly false. Russia wants Ukraine back and always has. They feel it’s theirs to have being that they were both once the Soviet Union. If NATO and other nations weren’t helping out Ukraine, Russia would have already easily taken over.
So the NATO indirectly attached with the Ukraine and Russia doesn't want that.
The Russian leader's initial aim was to overrun Ukraine and depose its government, ending for good its desire to join the Western defensive alliance Nato.
https://www.bbc.com/news/world-europe-56720589So here you can see that the Russia doesn't want that the Ukraine join the NATO.
Of course the main point is that, Russia wants back the Ukraine but the NATO is helping the Ukraine so the Russia against it and Russia thinks that if the Nato will do its activities in Ukraine so Nato can attack on Russia any time.
this war is against Russia and Nato, Ukraine is just playing the script of Nato. It's quite unfortunate that war that would have been avoided escalating daily, because of selfish interest of Nato. Nato should withdraw their support to ukrian and you will see the war end naturally.all blame are on Nato.