The first thing to try, is to turn-off the flash, if you are more than 12 feet from your brother.
That will give you a better chance at getting a photo.
But, it is likely the photo will be blurred since you will be shooting at a slow shutter speed and hand holding the camera.
The Kodak C633 is a basic camera with only a few controls.
It is not a good camera for taking photos in low light if the subject is outside the range of the flash (12 feet).
Cameras that work well in low light start at about $600 (the Nikon D40).
The only lower cost camera that might do OK for you, is one of the Fujifilm cameras with their Super CCD sensor and manual controls:
Fujifilm F30, F31fd
Ok I have a digital camera kodak c633. And I never get a good picture of my brother when he is performing and I know there has to be some sort of setting that will help.
He is a dancer/singer and he is on a stage performing when the lights are usually dark where I set and the stage lights are lit up sometimes in different colors. So I have tried several settings and nothing seems to work. Some times I am where not flash photography is aloud. He moves around a lot on stage so tried to get several different options select is impossible it seems.
Also I don't know what you call it but maybe shutter speed. I am not that good with camera things but what type of camera is needed when I want to take several shot in a row. My camera takes one shot and I have to wait for it to let me take another picture. So what type of camera will alow me to take several shot like a professional photograph takes when doing a photoshoot to pick the best shot.