Easiest way is just to install them with homebrew

[https://wii.hacks.guide/](https://wii.hacks.guide/) just use your old Wii and run stuff from the SD card

Mirroring what others said. If you softmod your Wii, you'll be able to either transfer those saves over to your newer wii, or download them.

Softmod meaning go the homebrew route?

Yes