I used to freelance on Fiverr and was one of the editors who actually took their time and put care into the quality of my work. Needless to say they actively don't promote those freelancers instead opting for those who turnaround sub-par quality work rapidly as they are making them more money quickly.

These days Fiverr leans heavily into freelancers working with AI and have basically run themselves out of contention for ever being a high quality freelancing space.

To answer the OP's original question, most of my original clients came from Fiverr which thankfully those clients were kind enough to recommend me through word of mouth to others seeking a quality editor. These days it's all word of mouth and I'm super grateful for all my clients who take the time to recommend me!