: Copy the contents of your downloaded/decrypted save folder and paste them into the folder you just opened.
You can find 100% completion saves, unlocked chapters, or specific game progress at several community-driven sites: rpcs3 save data download
Inside the emulator's directory, saves are stored in individual folders named after these Game IDs, often appended with specific save slot numbers. Inside these folders, you will find files like PARAM.SFO (which contains metadata) and SYS-DATA (the actual progress file). Where to Download RPCS3 Save Data : Copy the contents of your downloaded/decrypted save
Some popular PS3 games ported to PC, or heavily played on RPCS3, may have modded or completed saves listed here. Where to Download RPCS3 Save Data Some popular
The save was created with a different version of the game (e.g., patched vs unpatched). Fix: Install the same game update .pkg file via RPCS3’s Install Packages/Raps menu. Or find a save matching your specific update version.