I think many people are forgetting that the larger army, vastly outnumbering Ukrainian resources in numbers, has spent the past 9 months creating multilayered defences that the Ukrainian army has been banging their head against for the past 10 weeks. Ukraine no longer has a functioning military industry of its own or even an economy to speak of. It's entirely dependent on the west at this point.

NATO scrounged up all they had for this offensive, and US even ran out of shells to give having to resort to cluster munitions. NATO also trained Ukrainian soldiers. Now all of this is being lost without any actual progress being made. Ukraine hasn't even managed to reach the first defence line being mired in the security zone.

What we will see is that once the offensive burns itself out, Russia will start an offensive of their own against a depleted and demoralized Ukrainian army. The west will not be able to send more ammunition and equipment because it doesn't exist, and Ukraine will have lost majority of their trained and motivated soldiers who can't be replaced.

Even western sources are now admitting that Ukraine is suffering far higher losses than Russia, and that this is primarily an artillery battle where Russia vastly outnumbers Ukrainian artillery. 80% of casualties were being caused by Russian artillery.