Are you getting a (like 0xc000007b) when you try to launch the game, or is the file just missing?
Avoid YouTube download links, “free game” blogs, and file upload sites with intrusive ads. The risk of malware outweighs the convenience.
: Settings > My Installed Games > GTA V > Open installation folder .
Downloading a standalone file from unofficial websites is highly discouraged and often dangerous. This file is the primary launcher for Grand Theft Auto V
Antivirus software or Windows Defender sometimes incorrectly flags and quarantines PlayGTAV.exe as a threat. Windows Security Virus & threat protection Protection history If the file is there, select it and choose
from third-party "fix" websites or unofficial download mirrors.