You still insist on overlooking the fundamental truths:
1) If the Russians stop fighting, the war ends.
2) If the Ukrainians stop fighting, their land will be occupied, their leaders will be killed, their history and language will be erased, their children will be kidnapped to serve Russia.
Whether or not the EU steps up and helps, whether or not Russia uses nukes (another entire discussion), this is still the fundamental fact of the matter.
The Ukrainians know this, and that is why they must, and they will, fight to the end.
It is easy to sacrifice the land and lives of others.
Would you willingly surrender YOUR OWN city/sat/country to Putin's under those plans; do you have children and do you know what happens to captured children, particularly girls? (serious question)