Asking for help or advice on this.

I grabbed this online in the Steam sale having played the first one years ago and tried installing it without realizing it required that damnable Rockstar Launcher.

After a couple days of trial and error of reading different help sites I got the launcher working on my Deck

However once it is up and running when I do a search on my Deck it cannot find the install files which are on my SD drive.

I’ve tried to make multiple links to the SD folder back to various other folders to assist to launcher in it’s search but nothing is helping. The second I hit the button to scan for Rockstar Games it gives me a big ‘FU!’ that there is none found. ¯\_(ツ)_/¯

Has anyone else ran into this and what was the solution - it’s driving me nuts? Am welcoming any and all advice at this point.