Bro, you can't turn off camera shutter sound, only option is to mute your device while taking photographs.. or if your device supports Bixby routine..then you can use it mute camera shutter sound
See, taking selfie with a palm is not that effective..your palm should point properly towards the front camera, you will see lighting around camera cutout..
Photo click sound is for your security, so anyone click your photo so that you can hear the sound. In some Country you cant click photo of another person without permission, it is illegal so they give sound
