What type of fonts do I miss?
If you forgot to change the language from English to Polish during installation, you can install the desired language pack later.
Open System Settings, navigate to Region & Language → Change Language.
Assuming I understood your question correctly.
My system has polish fonts, those on the picture are different, maybe decorative.
It’s probably some kind of special characters, but I’m at a loss here, sorry.
And how this writing looks under your system?
Here’s the link: Redirecting...
It looks the same for me. Just ask in the group.