Three essential factors determine success as a freelance voice-over artist: supply and demand, determination, and courage.
Supply and Demand
Companies want real people to advertise their products or services. Authenticity matters in advertising, and professional voice talent supply remains relatively low compared to available work across commercials, videos, and other media.
Determination
I earned only $68 in my first month on Fiverr (October 2019). By November 2020, I was earning over $5,900 per month. Success required sacrifice: many lower-paying jobs and long nights recording until 2 or 3 AM.
Courage
Overcome self-doubt about your abilities and voice quality. The only thing stopping you is you. Take that first step, put yourself out there, and see what happens.