and since we're on the topic and I want to share my setup, here's my gopro setup, battery bank in the phone holder and gopro on a backpack strap mount, less than ideal filming from the shoulder but it's close enough to eye level while torso stability works well with gopro's integrated stability. Paired with mic muffs, this is a very capable budget setup
https://youtu.be/JUFUCegWMUw