If you don't see an assets or data folder, the game is likely packed. Use this tool first to extract the underlying files before using a decrypter. How to Decrypt Files: Step-by-Step
Final note: All decryption tools mentioned are for educational use. Always support indie developers if you enjoy their work—the $10 you spend keeps their next game from being a buggy mess of borrowed plugins. rpg maker mz decrypter
Most decrypter tools include a warning in their README: “For educational purposes or extracting your own lost data only.” If you don't see an assets or data
Sometimes, MZ games aren't just encrypted—they are "packed" into a single .exe . rpg maker mz decrypter