Hi,
Since you deleted your storage account more than 14 days ago, you cannot use the Restore deleted account feature.
Did you enable any type of backup on the account?
I recommend you upgrade your Azure support plan to at least Standard if you haven't already, and then create a Severity A (<1 hour response) Technical support case. Once an engineer responds to your case you can ask if there are any options to restore your account.
To upgrade your Azure support plan, please navigate to link below:
https://portal.azure.com/#view/Microsoft_Azure_Support/HelpAndSupportBlade/~/supportPlans
After you have upgraded your support plan, please follow instructions in article below to create support request. The process can be confusing, so please follow the article carefully. If you have any issues creating the ticket add a comment below with a screenshot and description and I will guide you.
Create an Azure support request
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP