strange noise

Hi, I've recently bought Xiaomi 15 Ultra and inside it makes a really weird noise. Is it normal or should I worry about it? It occurs when i shake phone left right or up and down rapidly. It can be heard when recording video which might be annoying im the future ://

I had an issue with my phone and more precisely my microphone. When talking on the phone people on the other side of the call could hear wind, tree branches and what not, so basically they could barely hear me and that caused a real problem. I searched everywhere for a solution to this problem...