@r0kit hax - Thanks for the question and using MS Q&A platform.
You can use Azure Powershell or Azure CLI to delete the workspace.
As per the error message, it looks like workspace deployment is failed. Please review error details in the activiy log tab and retry to create again.
In case, if you want to redeploy the databricks workspace you can follow these steps:
Go to resource group => Deployments => Redeploy the deployment as shown.
In case, if you want to delete the workspace, first delete the deployment and then delete the workspace.
OR
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