The "story" of getting these saves to work involves a specific ritual: : Users download formats like .max or .cbs .
If you downloaded an individual save file (like a .psu or .max file from GameFAQs), you will need a classic community tool called to inject it into your virtual memory card. Download and extract the mymc utility. Open mymc-gui.exe . God Of War 1 Save Game Memory Card For Pcsx2
If you are looking for specific challenge saves or max-level saves, searching on GameFAQs will provide you with the exact point in Kratos's journey you want to explore. The "story" of getting these saves to work