I have only United States for my Region and Formats probably because I have a custom installed Ubuntu!
How do you install another one?
update
This is why it doesn't work...how to fix this error?
First reinstall locale package:
sudo apt --reinstall install locales
Open this file:
sudo nano /etc/locale.gen
Find this line: # de_DE.UTF-8 UTF-8
, uncomment it so it's now: de_DE.UTF-8 UTF-8
. Save the file and run:
sudo locale-gen
see if you have German now.
If you want German region formats, I think this is a way: