Hello.

You'll get a blurred result when taking a shot in low light because the camera shutter will be open for longer than it would be in good light, the subject or the camera (or both) move whilst the shot is being taken and a blurred shot is the result. You could try using a wide aperture (a low f number, if your camera allows you to set the aperture size) and a higher ISO setting. I appreciate that using a higher ISO setting will give more noise but unfortunately that's just the way it is, and not just with your camera. You could try using a noise reduction package on your pc, if you are not doing so already.

If the flash gives an unnatural effect you could try changing the white balance setting (again, if this is possible with your camera.)