I will show you three different methods on how to find a stud in the wall, electric, magnetic, and manual. With a hole cut out of the sheetrock you can see what you might run into behind there. This job can seem intimidating because you are going at it blind, pick up on some of my tips and tricks to ensure you are on a stud.

Magnetic stud finder CH Hanson 03040 https://amzn.to/3gm8gYq

Zircon Edge Finder, stud sensor HD25 https://amzn.to/3cvaEuM