I would still recommend Upwork. Start very small, try to score some low budget fixed-priced projects. It's not that hard even for beginners in the site. Then do a good job and make the clients happy so that they write amazing reviews about you. Then keep biding on bigger projects. It worked for me.

If you have done something a million times, so that you can partial or fully automate, like say 'integrate google analytics into your website', then you might consider selling as a low price gig at fiverr.

Hope it helps.