If you choose to mod a standard installation yourself (the safest method), you will need several essential tools to make the mods work:
It is highly recommended to download mods only from reputable community sites to avoid malware: How To Install GTA 5 PC Mods - Step By Step
: Tools like Menyoo 2.0 or Simple Trainer provide in-game menus to control your mods. Where to Find Mods and Bundles
: The most vital component that allows the game to run custom scripts.
: A plugin that enables the game to load custom .asi files.