I was in Korea several years ago; I do not speak Korean, but my Google Account language preferences have since been very strange.
I'm running into a problem where if I go to, say, https://www.google.com/chrome/, the page is displayed in Korean.
This solution is NOT in
chrome://settings/languages. Here's a screenshot of what that looks like on my browser:
The solution is ALSO NOT in
https://myaccount.google.com/language. Similar image as above.
C:\Users\\[user]\AppData\Local\Google\Chrome\User Data fixes the issue when logged out, but logged in it reloads my preferences to include Korean, so the problem is clearly with my Google Account somewhere.