Re: alt won't work on Sims 4

@8ha8vzrq14ih  Have you enabled the Sims 3 camera?  (It's a button on the UI in the upper-right corner of the screen.)  This is required for free rotation, although you should still be able to move an object off the grid while using the Sims 4 camera.  You also shouldn't need to use cheats.

Please also keep in mind that items placed on top of a surface, for example clutter on a desk or table, need to fit into predetermined slots on the surface.  They can't be freely placed without some trickery.