Hey there are 2 common issues that come up. One is that people mess up the actual process with installing mods in which case i would recommend watching the video below I would also suggest using a fresh install of the game, but if you are 100% sure you got the process right, then another common issue is that when you extract the folder, there is another folder inside it with all the mod files in. That folder is the one you want to use when patching the game. If the issue still persists, please let me know.