Maybe I didn't get it right, but it seems that you are not following the proper procedure, please feel free to correct me.
If you want to deploy a new vCSA you need to have an ESXi installed and configured.
After that, you will have to open the .ISO on your computer and run the setup, it will require an ESXi host (which you have previously installed) and will deploy vCSA (OVF template) on that ESXi host.
Please consider that as of vSphere 6.7 VMware removed the windows installation option.
you can check the steps here https://vmarena.com/how-to-install-vcsa-7-0-step-by-step/
Please let me know how it goes.