I'm really skeptical of the narrative that Alphabet et. al. have brilliant, super-precise targeting of ads. I'm an American who only speaks English, but I'm cu

I'm really skeptical of the narrative that Alphabet et. al. have brilliant, super-precise targeting of ads. I'm an American who only speaks English, but I'm currently living in a non-English-speaking country. Youtube constantly serves me videos in a language I don't understand. Mostly, I don't even understand what product is trying to be sold to me, and for the minority where the product is clear, I don't understand the arguments, and I'll never buy these things, anyways. I've never watched a non-English video or ever interacted with the non-English speaking web. How on Earth can Alphabet screw up so much? The only thing I can fathom is that Alphabet is optimizing for getting more advertising revenue, long-term effectiveness of their ads be damned.