If an issue with starting:
GTA V folder screenshot https://gyazo.com/2c776b4bde55f30842c522668e9e7a45
GTA V/update/x64/dlcpacks screenshot https://gyazo.com/de5e2b7669b8821d6e574c67f2667146
Filepath to FiveM folder https://gyazo.com/672fa15ff0caa2efae4d363a4aaad8bb
FiveM client folder screenshot https://gyazo.com/1881685ff87ae88daee694302f891094 https://gyazo.com/67c9dca2d18fe9a417226b5558c7981c
Did you try to disable/uninstall your Anti-virus? No
https://gyazo.com/53c8e775270aabbe71fd2500cad0a6ab
Also add what you already tried so far. Just re downloading it