I found something :
So after some tests, I put a skeletal mesh into the CapsuleComponent like this :
And in fact it’s working, with one problem :
The component turn like I want, but camera still fix on Yaw axis.
If I uncheck “Use Pawn Control Rotation” of “FirstPersonCamera” :
Yaw axis is ok, but Pitch still fix at this turn. I don’t understand why…