Good day! I'm Raniel, a Microsoft user like you. I understand your frustration regarding this issue but 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 the issue 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...
Double-check if your machine doesn't have any pending security patches: Go to Start > Settings > Windows Update > Check for Updates. Also ensure that the necessary drivers for your machine are properly updated by getting them from the manufacturer's website. You may refer to this guide:
https://support.microsoft.com/windows/update-dr...
I also suggest that you perform the additional steps on these articles to improve the performance of your machine:
https://support.microsoft.com/windows/tips-to-i...
I hope this helps. Good luck!