Can't get game (God of War 3) to play - Am I doing something wrong?

RPCS3 does not read ISO files, you need to dump your game as JB folder

Thank you. Is there a recent tutorial or something on YouTube perhaps that shows how to do this that you would recommend? I can find videos on converting JB to ISO, but not the other way around, it seems.

By the way, I saw your Discord name written in Katakana. 実はオレは今日本に居ます。フレックスビーは日本語ができますか？