The only relevant answer is that nobody knows for sure. Ukraine is doing their very best but they're fighting not only Russia but also the combined effort of all the fuckwits that support Russia materially, i.e. China, Iran and North Korea etc. it's not exactly an easy position to be in, even if their tech is of lower quality than what we have in the west they're also able to churn out a lot more, and that shows.
On the other hand, it's pretty telling that Russia is resorting to what amounts to long range terror bombing in between human wave attacks. They used up a lot of manpower last summer, and it can't be easy to replace those losses. They do have access to a lot more human resources, but again, of dubious quality.
Russia is certainty hoping for another 4 years of the orange fuckwit in the White House though. That's where the real danger is. If that happens all bets are off.