Why my phone keeps on turning the volume down why playing music

[Android Central Question]

I have a new galaxy j4+, one week old. It has been turning the media volume down after a few seconds when playing music. Sometimes I would hear a two beeping sounds followed by a camera snap sound, but there is no picture taken.
Any kind of help will be appreciated.

 

[B. Diddy]

Welcome to Android Central! Does this only happen when headphones are plugged in?