You can rotate objects in The Sims 4 by right-clicking, using the comma and period keys, or pressing the bumpers. If you're using the Sims 3 camera options, you'll rotate by clicking and dragging ...

To rotate anything, make sure it is selected and ready to be placed in the world, but don’t place it. Instead, hit either the comma (,) key, period (.) key, or your right mouse button to rotate the ...