Hello Maria_143! I'm Gunasekar and I'd be happy to help you with your question.
Here in the community, we do not have access to your Microsoft account.
Did you close your e-mail permanently?
How to close your Microsoft account -
https://support.microsoft.com/help/c1b2d13f-4de6-6e1b-4a31-d9d668849979
It appears that Facebook is still using your old login credentials. However, if you have updated your information, your login credentials should have been changed. If your old credentials are still being used to login to Facebook,
I recommend reaching out to Facebook's support directly. You can typically find support options in the Help Center within Facebook settings.
I hope this information helps. If you have any questions, please let me know and I will be happy to help you further.
Best regards,
Gunasekar N