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
Even if we were willing to provide such equipment to Ukraine, they haven't got enough time left to train up pilots who can use it. They are also running out of men for their army.
Hunter-killer drone aircraft would be a strategic upset that would neutralize air power for everybody. It would likely eliminate the Russian advantage in artillery too. If we had them and were willing to give some to the Ukraine, it would change the outcome.
But we don't and we wouldn't give such equipment away if we did.
The Ukraine government is going to end up in villas in the south of France. Or in Florida.