Downloading "repacked" or "highly compressed" games is risky. Only use trusted, reputable scene groups. Many sites promising "highly compressed" games are actually hosting malware or ransomware. Reputable Scene Groups for Compressed Games:
Background scripts that steal your hardware power to mine cryptocurrency, drastically slowing down your PC.
If you are looking to save space without using potentially unsafe compressed files, using or Steam to install only the multiplayer or campaign parts is the safest option. How to Safely Install a Compressed Version
A compressed file might save storage space, but the potential cost to your digital security and personal data is far greater.