I managed to run GTA V in the Konkr Pocket Fit with Game Native
I hope this one helps some other people coz I was struggling with this for some time and couldn't find a straightforward response. I wanted to replay GTA 5 in my Konkr, but after trying with Game Hub and Game Native, I was always getting the same error: the Rockstar launcher failing to run the game. So the solution I found was to download GTA 5 from fit girl repacks, install it on my computer, and then copy the whole folder to my Konkr internal memory and then in Game native importing it as a custom game. Then the last and most important part to make it run is to select for executable path "PlayGTAV.exe" and for exec arguments "-nobattleye %*" which is the argument that is used in the file PlayGTAV.bat if you open it with Notepad.
For the container config, it ran with the default values, but I changed them following the teaching of this video: Stop Guessing! EVERY Game Native Setting Explained
When I first opened the game, it wasn't showing full screen but in 4:3 ratio. Just press start and, go to the graphics settings and change it there.