The US is an absolutely huge win - get the valuable customers and leave the rest for Android. For comparison the 2021 advertising spend in the US was greater than that of the next 10 countries combined.
> - the population of 10 european countries combined is not as big as the US
Exactly opposite. US states generally have larger area, but lower population. Population-wise, California is about the size of Poland and Texas is similar to Romania. No state is comparable to Germany (83M), France (65M) or Italy (60M).