To put things in context, if Ukraine allows Russian to win, they'll lose 100% of their military and civilian personnel. Putin has said so - that wiping out every trace of Ukranianism is the ultimate objective of this "special military operation".
In the meantime, you seem to have become fixated with that percentage of territory graph you found a few weeks ago. Perhaps this (Ukrainian government) video will help you understand why they're not so bothered as you are:
Side note: the presentation includes a very clear indication that the Ukrainians will fight this war the way they think is best, not the way the Americans tell them to.