Enroll iPhone with iMazing (Windows)
Use a Windows PC with iMazing to enroll your iPhone in Supervised Mode.
iMazing is a tool compatible with Windows devices. If you have a Windows device, you will need to use iMazing instead of Apple Configurator.
iMazing costs around $50 for a one-time payment if it's for personal use.
Step 1: Download and Upgrade iMazing
The cheapest option is to do a Personal license for a single device. I'd recommend the one-time payment instead of the subscription.
Step 2: Connect your iPhone
You should see it listed like this:
Step 3: Create an Identity to Supervise your iPhone
You should see a page like this after selecting Supervision.
The information doesn't really matter here, but I strongly recommend choosing a descriptive name. This Name will be displayed on the Settings menu of your iPhone after Supervision is complete.
Step 4: Erase All Content and Settings
After proceeding, you will be prompted to Erase All Content And Settings.
On your iPhone
Next Up: Restoring your Data
tutorial
Restoring your Personal Data onto your Newly Supervised iPhone
It's now time to restore your data on your Supervised iPhone