The result of dotnet run Azure is the error "Website with given name SAFE already exists." I changed all strings in farmer-deploy.json containing "SAFE" to "SAFExyz" and saved my changes. I then rebuilt and then ran dotnet run Azure again. This resulted in exactly the same error message and the changes I made to farmer-deploy.json were reverted.
The name of the application in Azure App Services is required to be globally unique. Presumably, someone else has already created a webapp with the name 'SAFE' or 'SAFExyz'. Try making the name more unique such as adding a unique prefix and publish again.
See: Azure Web Deployment Fails - Website with given name already exists