Using Horizon to inject games into usb

Hello Guys, I am new to horizon, So, I was having some trouble with using horizon.
My question may have been asked somewhere else and answered, but I couldn’t find it so i need help.
I am trying to inject a game, The rise of tomb raider into my xbox configured usb, but when i try to inject the 44 kb file, it it takes a long time, and completes sometimes it shows content but most times it has no content in the file explorer of horizon, i take the usb to my xbox and try to play it but the games shows as a corrupt file and a yellow icon and an exclamation mark. I’ve tried doing this with fifa 16 too it doesn’t work. I have seen people do it and completing this method. I download the gamwe from the internet and convert the iso into god using iso2god, i also tried directly downloading a god but when i inject it it says invalid stfs package, i also tried dragging a complete folder to horizon but it says access to path xxx denied.
Please help.