A cloud-based identity and access management service for securing user authentication and resource access
Unfortunately, to create a Free trial account you need a Credit Card. This is how microsoft verifies the user identity on signup.
I will recommend you maybe renew it and try again.
See:
https://azure.microsoft.com/en-in/pricing/purchase-options/azure-account?icid=azurefreeaccount
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola