lol guys are getting hysterical here on both sides. as significant as this defeat is it isnt decisive, unless there were massive loss of men and equipment. i dont see that being the case since the reason a rout had taken place was due to the fact that there weren't many russians in the sector in the first place.
people also make the mistake of looking at the maps too much, this battle is about more than just land and troops, but also initiative. ukraine gained initiative here, and it will be difficult for russia to recover that. the frontline will likely freeze in a few weeks due to mud, but then winter sets in. i imagine winter will favor russia a bit more than ukraine. this is because ukraine has a higher composition of conscripts, who were all trained in the summer. fighting in winter is a whole different game, and russia might adapt better here. other factors like frozen rivers and streams will also favor russia.
my forecast is that once winter sets in, ukraine will go back to its game plan last winter, which was to focus on holding cities and settlements. for russia though it makes sense to mobilize soon to have sufficient troops and equipment to make some big push then.