@iqimpztesting1 Thank you for reaching out to us, As I understand you are in authentication loop/got stuck while authenticating to the Entra ID/Azure AD Portal.
This happens because of the security defaults enabled on your tenant, more details on what is security defaults can be found here - https://learn.microsoft.com/en-us/entra/fundamentals/security-defaults#enabling-security-defaults:~:text=Security%20defaults%20in%20Microsoft%20Entra%20ID
To come out of this issue, you need to contact our support team - https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2 where they will create a support request route the request to Data Protection team, once they validate your details, further case will be collaborated with Identity team to unblock your account from Security defaults.
Once the support ticket is created, do share it here for tracking purpose, so that i can check internally to get this issue resolved at earliest for you.
Let me know if you have any further questions, feel free to post back.