Actually, there's a reason why it sounds bad. Your voice sounds better to yourself in person because the vibrations of your voice travel through your skull to your ear, making it sound deeper. But the microphone only records the vibrations through the air, so your voice sounds higher. There's a similar explanation for why we hate pictures of ourselves. Basically, when someone tells you that it's a good picture/video of you, they're not only trying to be nice, it just honestly is.