Well, the Germans were prepared and that is why did better, especially early in the war.
Anyway, they lost between 3,000-4,000 aircraft on the East front during the first 6 months only.
But both sides weren’t too much accurate in their claims.
AFAIK Germans claimed a total 77,000 Soviet aircraft shot down while actual losses are about 46,000.
Soviet claims are about 52,000 German aircraft.
A realistic factual ratio believed to be some 3,5 to 1 in German favor.
The Russians and Nazis as allies invaded Poland together in 1939, so the Russians were obviously where they wanted to be for conquest.
The Russians can’t be trusted for any figures, but the bottom line is that they weren’t very good, they fight with masses of human meat.