google shows me a result on GOG but the website sends me to the main page.
No results on gog itself.

Hey there, as your account says, yopu are from germany.
And as it seems, the game isnt available for germans.

yoU SEe A Very Preselection Now in the store as a german user.

Google doesn't know this and will show you the indexed result it has.

Same thing applies for titles on some big competitor plattform.

Sorry to say you this.