I purchased secondhand laptop from Germany and during setup of Windows 11 I kept the original language (German) and also added English language. Then I continued to set up everything in English. Later I decided to remove German because I didn’t need it. But once I had to use advanced boot (blue screen boot) option I found out it is still in German. I checked my registry and settings and it all seems to be set up for English. Do I have to use Windows 11 creation tool? But I don’t want to loose my apps, data, nor drivers. Especially drivers, because it is pain installing them and finding correct ones. 
Answers for the other “similar” that I tried How to change the language of Windows Automatic Repair interface? question didn’t work. My question is whether there are still more options how to resolve my issue before resolving into Windows reinstall. My question is also regarding whole advanced boot menu being in different language and not just part of it.
Screw you admins.
