During the war, we didn’t believe the fantastical claims of German pilots having hundreds of kills, with Aces being credited with kills in the 300s, while our Aces were giants with 10% of those totals.
After the war we discovered that the Germans were very good about their records and air kills, it’s just that they were fighting the Russian meat machine, and that the extraordinary numbers were accurate.
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.