++ source of referenc: https://www.techhow.org/how-to-turn-off-find-my-iphone/
You can get detailed step by step guide here.
Find My iPhone is one of the best feature or your iPhone or iOS device that enable you to locate your iPhone or erase your iPhone data remotely or lock your iPhone or send an alert and It also prevent erasing your iPhone by a thief. It also allows your iCloud account to track your live location. So if you want to know how to turn off Find My iPhone then here is the best-detailed guide to learn how to turn off Find My iPhone and remove iPhone or iPad or iPod touch or Mac or MacBook from Find My iPhone.
Here is the details of the post:-
1 How to turn off Find My iPhone
2 How to Sign Out from iCloud and iTunes & App Store
3 How to remove Mac from Find My iPhone
4 How to turn off Find My iPhone from iCloud
5 How to remove and Apple AirPods pair or Apple Watch from Find My iPhone
6 How to turn off Find My iPhone remotely
7 How to remotely erase iPhone data