Help making a custom camera system

I’m making a game where the standard roblox player isn’t used at all, rather a simple cuboid that doesnt’t use physics.
Due to the abscence of the actual player, the camera is just stuck, not responding to mouse movements. (Not surprising, seeing as I need to use Scripted mode.)
R-click doesn’t need to be held to move the camera, and I need to adjust the rotation of the camera afterwards to match the rotationg surface it is on.
Any help?