One option might be to advertise on eBay and see if anyone wants to swap their English version for your German one. I am pretty sure that Microsoft won't change it for you, but you never know, schweine dürften fliegen.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?