Have you extracted an iso from your rar files yet? If not, are you stuck on one of my uploads? There's a guide for getting an iso out of my weird uploads:
https://www.epforums.org/showthread....Using-QuickPar
If you've gotten your iso, you'd be looking to use Wii Backup Manager to transfer the game over to your USB drive. Here's a text guide explaining how to do that:
https://wii.guide/wiibackupmanager.html
Sorry I'm not providing you with video guides, I don't really do those.