Not that it will do any good...
But you are wrong. Russia’s T-90 is only a prototype. They are not known to be in service. No one has even seen one as of yet other than a parade.
HEAR THIS LOUD AND CLEAR PEOPLE:
THE VAST MAJORITY OF RUSSIA’S TANKS ARE AND REMAIN OLDER MODELS.
Pooty’s war is (hopefully) failing but not for the reasons you are giving.
Yeh, uh no they are not a prototype. They are the current generation of Russian tanks.