Pirated Games

You've already been told.

Goldberg/GreenLuma work by effectively adding stuff to the game files at runtime. Technically the original game files are untouched, but you are still playing a cracked copy of the game. Goldberg and or GreenLuma are doing the cracking by bypassing the Steam DRM.

Because Goldberg and GreenLuma are trying to work for multiple Steam games, and are also trying to trick Steam into allowing you to use Steam's Achievement and Cloud Save features for games you don't own, they are in an almost constant state of cat and mouse against Steam. They don't work consistently and break regularly. They also introduce significant risk of getting your Steam account banned.

You are much better off downloading a more "traditionally" cracked copy of a game from a "reputable source" (you can find them in the fmhy guide(s) or the main piracy community megathread/wiki). Those don't interact with the Steam platform in any way, so they are not in a constant cat and mouse game where they will regularly get broken until the community figures out how to bypass Steam's latest changes. Game specific cracks will keep working for the game version they were made for forever, as they aren't aiming at the moving target of Steam. They also won't get you banned from Steam as they aren't interacting with it or its features in any way.

As already stated, Nexus mods work with cracked games. Cracked games stay cracked and stay working. That is your solution for keeping access to a pirated game and being able to mod it forever.

There is no requirement for the game files to be original and not cracked, unless you are requiring that purely to make things more difficult on yourself. If you insist upon that, you are stuck with the flawed inconsistent solution you were last using of Goldberg/GreenLuma etc. It will continue to fail at effectively random times for reasons outside of your control. Forever. There is no alternative for "unmodified game files". The alternative that doesn't require that which will meet your needs is what was told to you in my first comment (and in this one as well).