Even if russian did gaive up and pull out
How much would it cost to repair all the damage that been done in Ukraine and how many years would it take fix/rebuild everything ?
Could be crowdfunded with all the goodwill towards Ukraine at the moment, set up a JustGiving page.
It will take decades probably, depends how much much funding they receive and if Western countries want to make a point of it bouncing back. Sadly its unlikely Russia will be leaving anytime soon and as the Russian economy is in freefall they aren't going to be throwing money at Ukraine to try to win over the people.