1. Enable 2FA

  2. Apple ID > Find My > Find My iPhone > Find My Network, Send Last Location (Enabled)

  3. Go to Settings > Face ID (or Touch ID) & Passcode > Control Center , Wallet, and Accessories (Disabled)

  4. Go to Settings > Face ID (or Touch ID) & Passcode > Stolen Device Protection, and choose “Always” under Require Security Delay.

UPDATE

I WROTE THE ABOVE THE MORNING BEFORE I FOUND MY PHONE, SO NOW I ACTUALLY GET TO APPLY MY OWN ADVICE TO MY NOW RETRIEVED PHONE, LFG!

VIDEO LINK