iPhone XS Max Camera Rattle Noise

Hi folks, I’m new to the iPhone XS Max and I have noticed that when I shake my phone side to side (I don’t do this purposely I noticed it when playing a game) I can hear a rattle kind of loose sound by the camera. Now I looked online and when I activate the camera it does quieten down to silent but it shook hard enough it still rattles. Can anybody confirm I’m just being OCD or is it something to worry about? I do apologise if this subject has been covered but I’ve been unable to locate a post for the XS Max. Thanks folks in advance.