Upwork is the place to be if you want to earn money consistently off of your talent. Been an upwork user for years now and I must say it has helped me propel my freelancing career. They've been a little stricter these days though and I felt like they're wringing the necks of upwork freelancers now more than ever with all these stupid verification processes but at the same time I'm still thankful for upwork's help in my career and would always recommend it to people who are looking to start their freelancing journey.

fiverr is mostly for gigs and not something you should really look forward to if you're looking for a more consistent earning potential.