Hi, a draft no. But you can restrict any page so others can’t view it. In order to do so, you need to have permission granted by your space admin. So you publish the page and only the users you want, will see it.
Click on the three dots on top of the Confluence page (in view-mode, not in edit-mode please!) and go to “Restrictions”.
Then you see this and can (if you got the rights, in this screenshot the person did not have them…) chose the authorized users to see your page. You can change this later.