Sites like upwork, freelancer, fiver, etc are the worst places to find contract jobs. Its a mix of very desperate people and scammers, the quality is very low, and the rates are low - attracting the worst possible buyers. No one will see your posts unless you spend money, and it costs a lot. So you are better off spending your money and time on advertising your services and do networking activities in your local area. Use your social network to find referrers. Or work for people that are good at finding jobs