Codex for games

I have been using codex for FiveM a gta5 pc platform. I mainly use it for scripts to make some more realistic gameplay for people that play it or even for myself. I have also used it for blender to make buildings and such. In my experience it absolutely sucks at 3d modeling buildings. So bad that I am not good at blender by any means and even I am like give me a few minutes and I could do better. Anyone have advice to either making it better at blender or how to take the quality of the scripts to a higher level? No ego here so let the advice rip