What could be that noise?

[Nano9]

Hi everyone, first of all sorry for my bad english.

I am here because i need help to dected a noise in my subaru legacy 2011, i will put a video link to the sound what makes, somethimes sounds that noise higher and anothers lower. It sounds in the rear part in the wheels or suspension zone. but I don't know where exactly the noise sounds since it only sounds when the car is rolling on roads that are damaged or in poor condition. Thanks for you attention.

https://youtube.com/shorts/NazpndkR-o0?feature=share