this video explains the exact problem that i have Star Citizen Behind the Scenes: Vision Stabilization - YouTube if someone know how to do the sultion he says in the video please contact me.
Don’t ask people to watch a 10 minutes video just to help you. Explain what you need instead.
I think what you want is some Camera Lag, which can make the camera feel much smoother.
This can be done by using a Spring Arm Component with your camera as a child to it, then settings its range to be 0 if you want First Person, then you can adjust the settings to the right of how much Rotation Lag you want.