While some games will boot with just the keys, many titles (especially newer ones) require the actual Nintendo Switch system firmware files to be installed within Yuzu to mimic the console's operating system environment properly. Step-by-Step Guide: How to Setup ROMs on Yuzu Android
These are the decryption keys from your Nintendo Switch. Without a current prod.keys file placed in Yuzu's system folder, the emulator will not be able to read or display your game library. 2. Nintendo Switch Firmware
To play games on Yuzu, having the game ROM file alone is not enough. Because the Nintendo Switch uses proprietary encryption, Yuzu requires specific system files extracted from a physical Switch console to decrypt and run the games. 1. Prod.keys and Title.keys
The Nintendo Switch boasts one of the most incredible gaming libraries in history, featuring masterpieces like The Legend of Zelda: Tears of the Kingdom and Super Mario Odyssey . Thanks to rapid advancements in mobile hardware, you can now experience many of these console games directly on your Android phone using the Yuzu emulator.
To help me give you the best advice for your setup, could you tell me: What or tablet are you using? Which specific game are you trying to get running?
Setting up the emulator is only half the battle. To actually play games, you need to understand how to source, prepare, and load Nintendo Switch ROMs (commonly referred to as game dumps) safely and legally.