https://git.ryujinx.app/Ryubing/Canary/releases emulator i use
https://prodkeys.net/latest-switch-firmwares-updated/ switch firmware (download biggest number)
https://prodkeys.net/ryujinx-prod-keys-update// decryption keys (download number that matches ur firmware)
https://nxbrew.net/ game rom can be found here. it is a pretty self explanatory process once u get in the emulator, if you have difficulties you can find a video im sure. there is also a switch emulation guide on FMHY.net but it is with a different emulator so the steps will not be exact but will be the same mechanically just with different menus

Respectfully,