From what I've heard, Ukraine is very slowly taking back strategic locations. At the moment, they're better equipped than the invaders, but that could change if Russia secures a weapons deal with China or NK. Ukraine also has a wide support (monetary, humanitarian, and military) from western nations. Ukraine has the advantage in the quality of their warfare, Russia in the quantity of meat sacks they can throw at the front.
In my opinion, even if Russia somehow occupies all of Ukraine (which I find unlikely), they will be a pariah nation for many decades. A significant part of their economy is energy export (fossil and nuclear) and the EU is already trying to separate itself from that energy dependence.