Maybe I understand you a bit differently but I imagine that you need to be able to make loops and move the camera side to side without regards to its orientation. I’ve tested similar thing for a space game but keep in mind that such free camera starts to behave weirdly and players quickly loose orientation.
You can try to build your completely free camera with rotators but you’ll quickly fall in a gimbal lock. You need to use quaternions.
First make your camera entirely locked to your controller in your pawn:
Next make this function:
You can use it the same way Aim is used in the First Person Character Example:
I hope I understood you correctly but if not, my apologies.