Fully customizable user-unique pages

I have created a function where vistors can become users on my site (subscriber role) by signing up on the front end of my website. I have also created restricted pages that only logged in users can see. But the problem is that the restricted pages are the exact same pages for every user. I want to give each user a copy of the resticed pages that becomes “their pages”. The edits and changes they do on their pages should only be visible by that specific user and not by everyone who is logged in. I have been looking for a plugin to do this but they all only seem to have a “profile” page as a user-unique page. In short, I have already created page layouts that will be the same for every logged in user, and now im trying to figure out how to give every user a unique copy of those layouts automaticly when they sign in. How to do this? All help would be appriciated.