learning to use your camera or camcorder can make a huge difference in the quality, brightness and clarity of your videos - as long as your camera / camcorder is a capable camera / camcorder.
i looked up your camcorder on BHphotovideo.com and it doesn't seem to be well liked. i looked up the stats, and notice that it has a small sensor, which means poor lower light performance. the manual mode and white balance seem limited, there's no aperture or shutter priority - basically it's a soccer mom/dad camera, and will do better in broad daylight but is not made for dim or challenging lighting. many of the reviews seem to concur.
whether you buy lighting - which probably won't be cheap and will require that you learn how to use it - or buy a better camcorder or camera, which will also have a learning curve, it's not going to be something you learn in a few minutes. you might want to look into a larger sensor camera or camcorder with excellent auto or program mode.