Around 98% of Ukrainian long-range UAVs get shot down by Russian air defence / EW. Ukraine often launches hundreds at a time just for a couple to get through.

The drones that do get through (usually only 1 or 2 each day), and that hit refineries do minor damage as evidenced by footage and satellite imagery, due to how refineries are built, and the drones' small warheads.

The damage done is then repaired within months due to how robust refineries are. This leads to only a temporary loss.

Meanwhile, the figures on Russian refining capabilities always get skewed to show total amount per refinery (per year), and not what is actually lost... which is only part of the refining capabilities for part of a year.

At the same time, everyone seems to be ignoring the hundreds of Russian Geran-2 drone STRIKES (not launches, strikes) per week that are hitting targets of military significance and contributing massively to the overall war of attrition.

But don't worry... just 50 more days and Russia will collapse.