Thanks for your question.
You need to backup your credentials in authenticator, if this was not done unfortunately you ccan only resolve this by contacting support or asking your admins/support to reset your account https://learn.microsoft.com/en-us/xandr/curate/troubleshooting-multi-factor-authentication-mfa?source=recommendations
You will need to contact the support teams of the applications on your MFA to assist you in resetting your credentials.
To contact support: https://azure.microsoft.com/en-us/support/create-ticket
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola