How do I find my stolen iPhone 12 Pro?

read the tools apple provided here

Find your lost iPhone or iPad - Apple Support

other than that contact your local law enforcements and your carrier and insurance company

Beware of any messages you get from "Apple" or from the "Police" claiming that they want to reunite you with your iPhone – and wanting you to click on a link, provide Apple ID and Apple ID password, or remove your stolen phone from the list of devices associated with your Apple ID.

These are from the thief or fence who

• Wants to remove Activation Lock so they can "make your phone their own", and/or
• Wants to ransack the data you have in iCloud

Do's and Don'ts for lost iPhones - Switched Off - Offline - Beware of Phishing – Apple Community

Click here for information.

(260286)

If you do see a location, don't go there in person to confront criminals. You might lose a lot more than just a phone. Give the location to the police.