Hi kyra,
Thanks for your post. Generally speaking, if you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool.
The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide. If we detect a problem with your account, we'll tell you what you need to do to solve the problem. If we don't detect any problem, we'll guide you through how you can help yourself.
Click the button to begin: Sign-in Helper
Reference: I can't sign in to my Microsoft account - Microsoft Support
Best Regards,
Ian Xue
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