@MojangSupport xbox one minecraft: no language selection button... it's stuck in French :( how can I change it to English?

If you have gone into language settings and you are unable to change the language that way, this may be due to the region/location settings of the Xbox itself. For assistance with changing your region, please reach out to nitter.vloup.ch/xboxsupport or support.xbox.com ^AM

I have changed / reset all regional settings as documented on various threads on the support pages.