Hi, i have the following problem,
i need to show users of the page specific information to each of them.
so that only the users are logged in can see his own private information.
You can start with this tutorial here.
https://support.wix.com/en/article/corvid-tutorial-building-your-own-members-area
As long as the info that you are adding has a connection to the specific user, does not have to be id you can use email address, then the specific user should be able to view it if you query the dataset used by user email for example.