Why is My Firefox Showing Local Language Instead of English on Linux?

Just to clarify, are you talking about the language of the browser menus or the search results? If it's the latter, it's probably happening due to your IP address as mentioned above. Also, remember, just because you're using Linux doesn't mean your online activity is secure or anonymous.

It sounds like your browser is picking up your IP location! Websites often base the language settings on where they think you're browsing from, not the time zone you set on your operating system. So if you're in a country that uses a different language, it will likely serve you content in that language unless you specify otherwise.

If you think it's something with Firefox, you're not alone. The default settings aren't the best for privacy. Consider tweaking them to improve privacy, or you could use Tor for a more anonymous experience, although that might be a bit of a hassle.

This isn't a fault of Linux or Firefox. It's primarily based on your IP address. Websites can see your IP and determine your general location, which influences the language they use. If you want to mask your location, consider using a VPN. It'll help keep your IP address hidden.

Websites can't see your OS settings like time zone. They only see your IP address when you visit them. That's why they display content in your local language. If you log into services like Google, they might also tailor results based on your location.