Even if, by a miracle, the injector contains no malware, the cheat itself will be detected.
FiveM uses a sophisticated ban system. When you are caught cheating: Free FiveM Cheat Injector
There is no appeals process for cheaters. Once banned globally, your Rockstar Social Club account is also flagged, potentially affecting your ability to play standard GTA Online. Even if, by a miracle, the injector contains
If you're interested in FiveM modding legitimately: There is no appeals process for cheaters
If you are frustrated on FiveM, consider these legitimate alternatives instead of searching for a "free FiveM cheat injector":