Funnily enough, I have the exact opposite problem, where Google likes to give me results in the configured main language even when I do queries in another and actually want results in the other language.
I’ve found it quite unsettling to be served foreign language videos on YouTube automatically dubbed over by Google into English. Just mixed in with the search results.
It's quite unsettling to be served English AI-dubbed videos randomly on Youtube, where the original is another language you normally default to (Japanese) and it's happy to use in most cases. And then you go to the settings for the video to go back to the original and it tells you it is... Chinese (and no, it's really Japanese).