Well, I finally got it, the trick is to convert the page to a dynamic page and then 2 pages are created (it sucks). One for all the content and one for individual content. Then from there you connect the contect. Meaning regular pages will not work.
After finished, I got a 404 not allowed to see this content. The specific collection has to be authorized. This is the resource: https://support.wix.com/en/article/troubleshooting-dynamic-pages-issues