Early on the Russians claimed they had destroyed the base from which Ukraine was operating its drones, which was in southern Ukraine
Also, that the factory where Ukraine was producing drones under license from Turkey was destoyed
Then, videos were released of at least three bayraktar drone strikes on Russian columns, absolutely devastating strikes
So who knows how many drones the Ukrainians have or how difficult it is to get them in an effective position without being shot down
They are launching them from fields not air bases