That's right, those two are the platforms in which clients are ready to spend a lot of money to get their jobs done. That is why the level of competition there is very high.All freelance sites are same in practice. The same way you are treated in the popular ones like upwork and Fiverr is the same way you would be treated there. The worst about these fiverr alternative sites is that, when it comes into freelance work, buyers majorly patronize upwork and fiverr.