You can disable Find My on your iPhone by going to Settings > [your name ... it's also the main reason Apple asks you to turn ...

It's easy to locate, but figuring out exactly how to find the serial number on your iPhone depends on which model you own and whether you are able to turn on the phone. How to find the serial ...

Find out how you can use the Find My app feature to share your location with friends, locate a lost Apple device or item with an AirTag attached.