My posts got “path navigation”, my pages haven`t.

Not sure what you mean to be honest. Perhaps some example URLs would help?

Otherwise, take a look at your index.php/single.php and your page.php theme files and you should be able to tweak one to look like the other (backup your theme first).

Example this url is a post
https://www.kjagen.com/2009/09/dream-theater/

above the post header it is a url path

How can I add the same also to show up for pages

Anyone.Is it something I can change in some theme phh?