There's lots of ways to approach the design problem you face, but one light and a plain text layer isn't going to cut it.
You should probably be using the C4D renderer. It's faster and does a better job.
You control the look by adding more than one light. I usually add ambient light at about 20% of 30%. Then it's just a matter of positioning, intensity and light color. The spectral, diffuse and reflection properties also have a lot to do with the look. Just as in real life, you have to know how to position and adjust light to achieve the effect you want.
You could also add a stroke to your text then convert the text to a shape layer. Unless you are using text animators that would probably be the approach I would take to make the extruded edges a different color than the face and back of the text.
Will add an extra ambient light. I also moved the light up a little higher above as where the sun or a ceiling light would be and started getting better results. Yes the C4d renderer is much better, thank you.