If you must use repacks for bandwidth reasons, this is generally considered the most "trusted" name in the community, though it still carries piracy risks.
Instead of a single corporate story, the "exclusive" experience on such sites usually involves the of games that have vanished from official sale. Here is a look at the types of stories that define that corner of the PC gaming world: The "Ghost" Exclusives
Many such sites require registration, disable ad-blockers, or use deceptive "download accelerators." This can lead to:
For a more secure and featured-filled experience (including cloud saves, automatic updates, and community guides), consider using established platforms like the Epic Games Store specific game title on that site, or would you like recommendations for legal free-to-play games currently available? PC gamers, where do you prefer to download your games from?
If you absolutely must use a site like KOOKDownload, do so in an isolated virtual machine or a dedicated offline PC—and never enter personal credentials or payment info anywhere on the domain.