That's a difficulty. I'm Finnish, and I get various pages and stuff in English, others in Finnish, my installation language is English, but my main language is, by default, Finnish, since I live here, and bought my Windows from Microsoft Finland.
I'm not sure about your browser, or its settings, you may affect it there. Generally, you can choose your settings in Windows via Control Panel / Region and Language /
or through the Language Bar on your Taskbar, by left clicking it, and opening it.
The main thing could be, in which language you install your OS. There are tons of languages, and it's not always so easy to decide how to choose the main or the first or whatever.
Hope you get it running.