Trainers like WeMod offered a fix: replacing the game launcher with a modified file that stripped BattlEye out. Users could then run a or trainer on top of a legally owned copy.
To fully understand why a standalone "workable crack" does not exist and what safe, legitimate alternatives are available for PC players, read the comprehensive breakdown below. The Architecture: Why a "Crack" Doesn't Work
If you have a friend who owns the game, you can join their session for free. They can invite you to play co-op even if you only have the Trial version installed.
If you want to play Ghost Recon Breakpoint without spending full price, utilize these legitimate options: