One easy way to tell who is losing a fight, or war, is by who is responding to the other's actions... that's who's losing.
"We" are losing in Ukraine.
I’m no military expert, it seems basic to me given the defensive lines the Russians have built it will be next to impossible for Ukraine to penetrate them without establishing air superiority which they never will without a modern well trained Air Force
The Russians know immediately when Ukraine attempts to advance based on the drones and other air assets, if the mines don’t stop the Ukrainian attack, the attack helicopters, precision artillery, missiles and attack aircraft pummel the Ukrainian armor
NATO isn’t even in the war - it’s Russia vs Ukraine.
And Russia LOST in March when it lost the battle of hostomel and of Kyiv