Hi,
My name is Igor, it's a pleasure for me to help others and I'll try to help you. I am merely a fellow user trying to provide insight and information that may be helpful to others.
This forum is not Microsoft support; it is a form of users' mutual support. Forum members have not an access to your account so may give recommendations only.
You may contact Microsoft support via https://support.microsoft.com/contactus/ page.
Unfortunately, it is not possible to set mail redirection without account login. If you suppose that your old account is hacked, please follow instructions at https://support.microsoft.com/account-billing/how-to-recover-a-hacked-or-compromised-microsoft-account-24ca907d-bcdf-a44b-4656-47f0cd89c245
Tell the result.