I have a jl2005a mini toy camera and my brother took it and when I tried to get it back from him he held on to it really hard and started messing with the mode button and now for some reason when I take a picture and the camera cuts off and I cut it the back on the pics gone (I have a little screen that says 20 and when you take a pic it says 19 and so on, and when I take a pic it goes to 19 and when it turns off automatically and I turn it back on its back to 20... )

Please help.

I would try, remove battery for minute, press power for 5 seconds. Battery back in.
Good Luck