Force Win to remember my keyboard layout?

Hey guys! I got a new laptop with Windows 10 pre-installed. I added a German keyboard layout*, which I prefer using because that's what's in my head. I'd still like the option to Win-Space to US layout if a friend uses my PC.

I disabled the Shift-Ctrl or Shift-Alt shortcuts that can cause you to accidentally switch your layout, too.

The thing is, every time I reboot my PC, the keyboard layout is back to US and I need to press Win-Space again.

How do I force Windows to remember my preference, German?

*(Settings => Time & Language => Region & Language => Additional date, time, & regional settings => Change input methods => Options => Add an input method)

Ahh, I think I solved it! Deleted the US layout, rebooted, re-added it, rebooted again. Now the DE stays.

Thanks man! I will keep that in mind in case it reverts.