HELP WANTED Camera is broken

My trusty small red Canon camera, kept normally in my pocket, with which I photograph things like hand-written signs and solitary street dogs, is out of commission. I am seeking your advice!

Here is the problem. To take a picture, you press a small black button. Currently, the small black button is located here:

It should be located here:

I have tried simply pushing it back into place, but it doesn't seem to want to stay there. My camera is currently a paperweight.

Advice? Thoughts?