Hi @Carlos Concha
Thank you for reaching out to Microsoft Q&A.
I understand that you accidentally deleted your account from your authenticator app and now can't access your account, as you didn’t set up a secondary MFA method. Additionally, this is your second Azure tenant, and you recently moved your Azure subscription to it, but you haven't configured any other accounts or administrators in the tenant.
In this case as you are the only global administrator of your Azure tenant, please reach out to Microsoft support for assistance.
Once you have submitted the support request, a Microsoft support engineer will contact you to help resolve the issue.
Or since this is your second tenant, please raise a ticket from your first tenant.
creating a ticket through a different account: https://go.microsoft.com/fwlink/p/?linkid=2024339
Let me know if you have any further questions.
Best Regards,
Harshitha Eligeti.