It’s really not that hard to use a local account. When it askes for a Microsoft account just hit SHIFT+F10 then type in the command “oobe\bypassnro” and the pc will reboot. Now just don’t let the computer connect to internet, and when it askes for internet hit “I don’t have an internet connection” and then it will let you continue with a local account.
…I admit though… as I typed that out its pretty annoying lol Not hard, but like… just annoying.
Honestly, I know Emby gets a lot of hate due to its background but this is why I enjoy it so much. The emby app for android is very well polished.