To surrender to Russia means that they have lost sovereignty to Russia and then they will subject to Russian again and the Ukrainians don't want that. They want to stand with their president and they have already started to volunteer themselves for army and fight Russia. I think this war might turn into something that will bring confusion in the world. Time may come when some countries, the Russian enemies will develop sympathy for Ukraine.
Which would had be wiser though, dialogue peacefully so as to avoid the loss of lives of your citizens or go into war. Lets be realistic, do we think Ukraine can fight Russia, we all know the answer to that and that's a no. Russia aren't even fighting Ukraine because if they were to, they could have easily burnt down Ukraine by now. They're only testing the patience of the NATO countries, using Ukraine as bait and also US and other NATO knows this.
I also don't believe Russia's attacks are about money, because Russia had to pay a lot of money for the war with Ukraine. So Russia will not
benefit financially from this war, especially since Russia knows that Ukraine was previously part of the Russian empire. So this is actually related
to the Ukrainian government which is now more inclined to the US and NATO, even Ukraine volunteered to become a member of NATO.
Russia is uncomfortable and feels threatened by the current Ukrainian government which supports NATO more than its neighbor Russia.
As you said Ukraine is just bait and Russia wants to see a reaction from NATO on this matter. Will NATO help Ukraine which is not a member of
the NATO alliance, or let Ukraine be controlled by Russia. I myself really regret that Russia attacked Ukraine, because the victims were Ukrainians
who did not know anything. This issue should have been resolved through peaceful dialogue, so there would not have been many casualties and
Russia would not have to spend a lot of money on this war. But indeed Vladimir Putin's way of thinking is a little unpredictable, Hopefully this conflict
will end soon so that there are no more casualties from this war.