How to fix my camera lens?

I have a Nikon and i was using it earlier. It dropped and the lens fell of the actual body of it. There were two pieces that had broken off and when i tried to put the lens back on, it stayed but not for long. The parts that had fallen off were from the part that locks it together. They were tiny pieces and i tried to put them back on with super glue but it wouldn't hold. I'm not sure how to fix this problem. The camera works but only if you hold it a certain way, otherwise it sens "connect a lens" or something like that.

Added (1). The lens itself it fine and clean, it takes perfect pictures. But is there a way i could get the missing pieces back onto it?

Clean

Take it to a camera shop

Camera repair isn't a DIY job. Either take it to a camera store, or buy a new one.

Nikon needs to repair the lens and probably camera

You can't drop a precision instrument and expect it so survive and certainly not expect to crazy glue it back together

Dropped camera.
Damaged camera.
Buy a new camera.