No language change button on website

I can't find the language change button anywhere
I am in Poland and I have a website in Polish.
I want to change to English because part of the translation does not work:

so due to the lack of the language change button, this is not easily possible.

Start by reproducing the language-selection problem on the LMMS website from Poland or with Polish selected, using the screenshot as the reported reference. Locate the website's language and navigation handling, then verify that a visible control allows switching to English and that the affected content is reachable in English.

Written by the indexing model from the issue text.