When you are signed in to Google Meet, the language is according to your account preferences.
On a shared/public computer, for security reasons, you might use Google Meet as a guest, without signing in to your account. In this case, Google Meet seems to adopt the interface language according to the browser and OS settings.
I can't find a way to change the language, either on the invitation page, or after joining the meeting.
In the settings, you can only change the language for captions.
My default web search engine with language site:support.google.com/meet only brings results related to modifying the captions and not the interface.
Does anyone know a way to change the language via settings, or perhaps by modifying the invitation URL?