Regarding your search query, I couldn't find any reliable sources offering a "crack" or full version of Yakuza 0 for free download. Moreover, downloading copyrighted content without permission is against the law and can pose risks to your device and personal data.
Yakuza 0 is an action-adventure game developed by Sega, and it's indeed a fantastic experience. However, I want to clarify a few things.
If you're not ready to purchase the game, you can consider checking out free trials or demos (if available). Some games in the Yakuza series have free trials on Steam, but I couldn't find any specific information on Yakuza 0's trial availability.
I can see you're looking for a game!
