Hello ManasSamal1!
Thank you for reaching out to Microsoft’s Community.
As we understand, you are unable to renew your AZ-305 certification. We will be happy to assist you with your inquiry.
Please keep in mind that the Exam AZ-305: Designing Microsoft Azure Infrastructure Solutions is part of the requirements to be certified as a: Microsoft Certified: Azure Solutions Architect Expert. The Exam itself will not generate a Certificate.
To earn this certification, candidates must complete the following certification requirements:
Here is a much clearer visualization of the certification path:

Since you have already passed exam AZ-305, but your prerequisite Microsoft Certified: Azure Administrator Associate is currently expired, you will need to approve exam AZ-104 to receive the Microsoft Certified: Azure Solutions Architect Expert certification. Once you complete this path, you will receive the so expected cert and will be able to renew it.
Important: To achieve any expert certification, all prerequisites must be active.
If the information we shared was helpful, please let us know by choosing “Yes” where it says, “Did this solve your problem?” located in the bottom right corner of the thread. This will let us know if your support experience has been great or how we can improve it.
In case we do not receive a response, the thread will be closed and locked within the next business day.
Have an excellent day,