Downloading copyrighted NSP and XCI files from third-party websites violates Nintendo’s Terms of Service and copyright laws. Always generate your own backups using tools like NXDumpTool from cartridges or digital purchases you legally own.
What I can do is give you a of the official game, which released on June 27, 2024 : Luigi-s Mansion 2 HD Switch NSP XCI
These are compressed versions of NSP and XCI files. Downloading copyrighted NSP and XCI files from third-party
If you plan to play on an or an emulator which released on June 27