Usando o novo Outlook no Windows para gerenciar e-mails pessoais, calendário e contatos
Hi, my name is Ric. Since you no longer remember your password and can’t approve sign-in notifications on your phone, the best next step is to use your backup recovery options. Since you mentioned you still have access to your backup email, you can request a password reset and choose that email as the method to receive the verification code. Reset it here https://account.live.com/password/reset. If you can successfully reset your password and sign back in, you’ll then be able to reinstall and set up the Microsoft Authenticator app on your new device. https://support.microsoft.com/en-gb/account-billing/set-up-security-info-from-a-sign-in-page-28180870-c256-4ebf-8bd7-5335571bf9a8.
Once you get back in, add a few more recovery options to help you if you get locked out again.
Let me know if you need additional help.