Lots of voiceover actors are hired on Fiverr, Upwork, and other on the internet marketplaces. https://openzem.com/%EC%9C%A0%ED%9D%A5%EC%84%9C%EB%B9%99%EC%95%8C%EB%B0%94-%EC%97%AC%EC%84%B1-%EA%B5%AC%EC%9D%B8%EA%B5%AC%EC%A7%81%EC%9D%98-%EC%83%88%EB%A1%9C%EC%9A%B4-%ED%8A%B8%EB%A0%8C%EB%93%9C/
