Hi @Pradhyuman,
When you delete a user in the Microsoft 365 admin center (or when a user is removed through Active Directory synchronization), the user's OneDrive is retained for the number of days you specify in the SharePoint admin center. (For info, see Set the default file retention for deleted OneDrive users.)
You could restore the onedrive by following steps
Here is the document for details
https://learn.microsoft.com/en-us/sharepoint/retention-and-deletion
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