@Muhammad Laique Welcome to Microsoft Q&A, thank you for posting your here!!
Normally, from the activity logs on the Resource group level you should be able to see the Storage account deletion operation which will provide you the Event Initiated by as show in the below reference screenshot.
A deleted storage account may be recovered in some cases from within the Azure portal. To recover a storage account, the following conditions must be true:
- The storage account was deleted within the past 14 days.
- The storage account was created with the Azure Resource Manager deployment model.
- A new storage account with the same name has not been created since the original account was deleted.
- The user who is recovering the storage account must be assigned an Azure RBAC role that provides the Microsoft.Storage/storageAccounts/write permission. For information about built-in Azure RBAC roles that provide this permission, see Azure built-in roles.
Microsoft recommends locking resources to prevent accidental account deletion. For more information about resource locks, see Lock resources to prevent changes.
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