For further troubleshooting, you can check community discussions on the Skylanders Imaginators Yuzu Reddit thread Activision Support for general game FAQs. for this specific game? Skylanders Imaginators Patch Update 1.1.0
First, you need your copy of the game. This means: skylanders imaginators yuzu patched
Disclaimer: You must legally dump your own Switch BIOS, keys, and game ROM from a console you own. This guide is for educational purposes. For further troubleshooting