That is a really important question to ask before committing to any service. From what I have seen, the best academic support focuses on editing, feedback, and helping you structure your arguments rather than writing everything for you. I remember feeling just as unsure until I found a service that gave me detailed comments on my drafts and suggested better ways to organize my sources. If you ever travel for research or a conference, keep in mind that the Turkey Airport Transit eVisa only allows you to stay in the transit area and does not permit entry into Turkey. The right kind of support should leave you still in control of your work while giving you that extra pair of eyes to catch things you missed. Always check your university rules first and choose guidance over ghostwriting.