If they don’t fight to the last man the Russians will kill them all off as prisoners, like they have done before.
Expecting the Ukrainians to just quit fighting while being invaded and everything will turn out fine is like expecting the Jews in WW2 to lay down their arms in the hopes the Nazis would let them live instead of turning them into ashes.
Expecting the Russians to honor a peace deal is like being an American Indian and expecting the latest land giveaway treaty will satisfy the settlers.
Now that they have gone into Ukraine, to keep it Russia will have to change its demographics completely.
I dont see any proof todays Russia is yesterdays USSR and the bloody communists. You are following the same line of argument that Russia wants to conqueror the world.
Most have said they are more like a re-born Czarist Russia.
And they are all Slavs. Russia wants an independent non-nato power as a buffer between them and NATO, that’s why they invaded.