I'd rather do without plugins, just to rotate camHave you looked at the Cinemachine integration?
Cinemachine - Opsive
The Cinemachine ViewType allows the camera to be controlled by Unity’s Cinemachine. Cinemachine version 2.8 or later is required and the com.unity.cinemachine Assembly Definition Reference . . .opsive.com
If you are using third person, you can also use the look at view type:
Third Person Look At - Opsive
The Third Person Look At view type will orient the camera so it is looking at the target. If no target is specified the camera . . .opsive.com
Look At only for IK, but I don't use itI'd rather do without plugins, just to rotate cam