Nobody knows exactly what's going on, but by reading primary accounts, examining open source information, listening to opinions from a range of military and Eastern European experts, it's possible to form educated views on what has happened so far, and what the possible/likely outcomes are from here.
Some of those possible outcomes are an unlikely Russian military victory, but many experts with far more knowledge than you are taking the view that the Ukrainians forcing Russian forces out of occupied territories is not only likely, but an inevitability over the coming months.
Your views are not only grimly nihilistic and defeatist, it's clear that they're not rooted in any of the actual evidence, objective reality or credible expert analysis out there.