Replace the data.bin on the card with the downloaded version.
Subreddits like r/WiiHacks or the GBATemp forums often have megathreads where users share curated save folders for the Dolphin Emulator or original hardware. How to Install Downloaded Save Data spider man shattered dimensions wii save data link
Finding a reliable link for Wii save data requires looking at established community hubs. Most Wii saves are shared in (official Wii format) or .gci formats. 1. GameFAQs (The Gold Standard) Replace the data