I'm going to strongly assume that you are the same person who shows up and asks about this stuff in incredibly broken English around once a month. Because of that, I'm going to be incredibly blunt and direct.

Forget whatever confusing bullshit you've already read about whatever it is you're trying to do. Just stop. You're too fucking confused, or the language barrier is too strong. Stop trying.

Make sure you're using a trustworthy ad blocker. Best one right now is uBlock Origin.

Fitgirl repacks is currently a safe source for pirated games. Not sure how directly I can link to it.

This is a DuckDuckGo search that should have the official fitgirl site as the top result: https://lite.duckduckgo.com/lite/?q=fitgirl

On fitgirl(dot)site, use the search to search for Final Fantasy XV. There will be one post for the result, with two options for download: a more recent version using a hypervisor bypass to work around denuvo DRM on the game, and a slightly older option that has Denuvo completely removed and apparently includes an optional patch to get Multiplayer working again.

Just choose the version you want (I'd go with the older version that completely removes Denuvo), download the multiple pieces of it to a single folder and install. Congratulations you're done and you can stop asking stupid shit in horrendously broken English.

Don't bother fucking around trying to crack it yourself. This option is safe enough. Don't run the pirated version at the same time you have steam going and you should be fine. Otherwise there's an incredibly small chance you'll get banned from Steam, but I've never seen it actually happen. Fitgirl hasn't ever served up any viruses or Trojans.

And if you can't get this working with these direct instructions and maybe using a translator on the fitgirl site to follow their instructions, then maybe you just don't get to fucking pirate it. Accept it's beyond your skill set and move on.