Good day! I'm Raniel. I understand your frustration regarding this issue and I'll do my best to help.
Just to clarify, did you make any changes to your machine before encountering this issue (like installing third party apps, recent updates, etc..)? Do you also encounter it when you access your account via safe mode?. Please see the steps under "From the sign-in screen": https://support.microsoft.com/help/12376/window...
Since the issue persist even after the troubleshooting methods that you have mentioned, you may also look into the Windows recovery options(see "Restore from a system restore point" or "Reset your PC"): https://support.microsoft.com/help/12415/window...
Note: ensure to have a backup of your files
Another option is to perform a repair install of your Windows which fixes the broken system files on your machine. Here is a guide: https://answers.microsoft.com/en-us/windows/for...
There should be no worries in performing it since you will select the option to keep your files during the process.
I hope this helps. Good luck!