Never download an FNF trainer from YouTube descriptions, random Discord DMs, or ad-filled websites. If a trainer isn’t on GitHub or GameBanana with clear code, assume it’s unsafe.
There is also a technical argument. Because FNF is built on an open-source engine, some purists argue that if one wants to alter the game, they should engage with the code directly or use specific "cheat-enabled" builds rather than external software that can sometimes cause instability. fnf trainer