I live in Germany and websites recognise my region as Great Britain. E.G: When I go to xbox.com using Vivaldi the website is in english and shows the prices in Pounds. With other browsers the page is in german with Euro. I have no AddOns installes, which manipulates the region settings.
Do you use english lang for UI ?
Perhaps something changes your browsers HTTP header for accpet-language? proxy? Extension?
What is show if you open chrome://settings/languages ?