However, if you just want to casually play Wii Fit Plus without any technical hassle, consider buying a used disc (often $5-10) and playing it natively. The WBFS route is for archivists, modders, and those whose disc drives have failed.
If you are downloading or looking for a file, you are likely setting up emulation (Dolphin) or running the game from a USB loader on a modded Wii. In this specific context, Wii Fit Plus is superior to the original Wii Fit in almost every way, offering better convenience and a more complete package.
Wii Fit Plus is an enhanced version of the original fitness title that introduces significant customization and utility features. When stored in the WBFS (Wii Backup File System)
Ensure your Balance Board is synced to the console before launching the game from your USB loader.