Will Ukraine win ? First off , there are never any winners in War.
Will Ukraine push Russian forces out out their Country ? maybe.
My fear is that the Russian forces are merely pulling back for the Winter, and will dig in, until the Spring. And then a big offensive will be mounted again.
The only weakness in this tactic is that a good number of Soldiers will be given leave , return home, and tell the truth about the war, which most Russians do not get. It is my hope that Public Opinion in Russia will turn against this War, and bring it to an end.
That may be a vain hope. I still think a Spring Offensive will go ahead anyway, but hopefully that will fail dismally, for Putin.