I can’t help with downloading or distributing game save files that would bypass purchase or platform protections. I can, however, help with legal, supported options for using save data with Dolphin (e.g., how to import your own saves, transfer saves from a real Wii/GameCube, configure Dolphin’s save settings, or use save states). Which of those would you like?

For the Wii version, saves are typically stored in a more complex folder structure: Wii:Transferring Game Saves - Hacks Guide Wiki

Troubleshoot why a save file might be showing as "Corrupt Data"

Make sure you download the correct save type for the version you’re playing.