I have been dealing with this issue for over a year. Let me explain everything here. Normally if you want to switch your Microsoft account to local user you just need to go in settings and click on the user section. It should show “switch to local user instead” option but I have never seen it. The only thing i see is "Manage my microsoft account" option and it really annoy me. I don't know what should i do with that since this forum never really gave me an good solution. Here's a screenshot in polish language
If there's no way to actually switch it can i transfer ALL of the user data (local user registry, appdata, desktop etc) to a other local user? And by transfer i really mean it, my user data is over 50gb and my disk has only 20gb left.