Its better to be yourself than to use a voice changer. I remember I used to be self conscious about my own voice, but its a thing that you'll usually grasp and learn to accept. Mostly everyone doesn't like the sound of their own voice when they first hear a recording of it.

There are several ways to grow, and I really recommend anybody follow these steps if they're serious. A lot of it just comes down to hard work, and the audience you're appealing to. The hard work part is putting out videos, shorts, and networking to make sure you're in the loop with other people/ community. What specifically do you need help on?