To change the default language to another language, you can run bin/console system:configure-shop --shop-locale de-DE. It will be changed from en-GB to de-DE. It would be best to do it in a fresh installation shop.
To change the default language to another language, you can run bin/console system:configure-shop --shop-locale de-DE. It will be changed from en-GB to de-DE. It would be best to do it in a fresh installation shop.