Linking data issue

Other than linking a page, how else do I need to link data?
I’ve had it working before, something fallen off along the way.

You can ensure that data is coming from a list in order to link it to the next area.

The link is coming from the Profile button bottom right, not from a list. Surely thats possible?

I just want it to display the details of the Logged in User.

Logged In User data will be available on that profile page, but “current user” would not