Working With a Graphic Designer, Is It Necessary?

Graphic designers are reluctant to start working with a new client, especially on upwork. Once you sign the contract with them, they will try to expand the scope and make you do more than you agreed to. I don't think it's like, me being especially empathetic, it's from working with a lot of freelancers. Like i've worked with graphic designers for and i've interviewed a lot of them about this project.