What do you think a commercial with a cool voiceover sounds like? What kind of voice should it be?

I love the microphone, I can easily voice even the most unpleasant things. And then there are the pre-recorded voices https://unimedia.io/voices/bengali from real professionals. It is beneath my dignity to voice things that are incompatible with morality. I wouldn't voice advertisements for pyramid schemes. This year I was asked to voice political commercials, and I declined.

Smile! A smile gives a completely different sound to your voice. Try stretching your lips even in a mechanical smile and you'll notice the difference right away!