The safest source is the official FLiNG Trainers website (flingtrainers.com) or the highly-curated cheathappens.com (though that requires a paid subscription).
I can tailor troubleshooting steps exactly to your PC setup! Far Cry 4 1.10 Trainer Fling
: Before using a trainer, it is recommended to back up your save files, which are usually located in your \savegames\ directory. this trainer or details on the latest game updates Far Cry 4 v1.10 +15 - FearLess Cheat Engine The safest source is the official FLiNG Trainers
Before activating the trainer, manually save your game by fast traveling to a Safe House. This creates a restore point. Then, press NumPad 1 (God Mode), NumPad 2 (Infinite Ammo), and watch the Royal Army of Kyrat tremble. this trainer or details on the latest game
Fling trainers are highly regarded for their clean user interfaces, reliability, and hotkey implementation. The version tailored for Far Cry 4 update 1.10 typically includes a robust set of options designed to tackle Kyrat’s harshest environments. Combat and Survival Options
What are you using for the game? (Steam, Ubisoft, etc.) Are you getting any error messages ? Which specific cheat option are you trying to activate?