RPCS3 stores its data in $XDG_CONFIG_HOME/rpcs3. More game directories can be added. It differentiates between disc dumps and downloaded (PSN) games. Put disc dumps into the disc directory and the downloaded ones into the game directory.
If the game once worked perfectly and suddenly stopped working after starting it, clear the cache. It is usually found in $XDG_CACHE_HOME/rpcs3 and is safe to remove. This location only contains logs and other things that can be regenerated without problems, like compiled shaders and PPU modules. Removing this will cause the next startup to be slower.
Step 1: Go to the official RPCS3 website to download the RPCS3 installation zip file and then unzip it. Then, in the unzipped folder, double-click the rpcs3.exe file, and then RPCS3 will launch directly. After RPCS3 is launched, you need to grant access to RPCS3 to allow it to update its data or accept other settings. 041b061a72