Fisheye lens nikon d3100?

I recenty bought a zeikos.45x wide angle fisheye lens which sounded sketchy to begin with anyways, I attached it with the macro adapter trying to get that circle framed picture but my camera wouldn't focus! I could not take the picture unless I manually focus which still somewhat came out unfocused.

I would not expect the quality to be very good, even when it works. Anyway, a macro adapter should make it only work at very close focusing distances. To get a super wide view at normal distances, leave out the macro adapter, and zoom your kit lens to its widest (18mm) setting.