Welcome to DK.
Thats a typical Wii thats only been softmodded with 17 stubs you need to change. There are threads on here that have the same problem.
Wii v4.3u (cIOS 58) - usb loader gx requires at least cios 222 or 245-250
USB Loader requires at least cIOS 222 or 245-250
Your easiest thing to do now you have the sysCheck.csv file on the root of the SD card from the sysCheck is download ModMii6. 2.3 and run it from Windows. On the main menu type in SU and type in the location of the sysCheck.csv. Its easier to put this on the root of a drive as it saves typo's.
That will download all wads and apps that are missing into a COPY_TO_SD sub folder. Add all files and folders to your SD card and run Homebrew with the SD card inserted.
First of run IOS236 Installer from Homebrew and install IOS36 as IOS236. Come back out and run Multi-Mod-Manager and select WAD Manager this will default to the wad folder install all wads in there. Watch for the Installed OK message after each one. If any don't install just try them again.
Now ModMii only installs 2 d2x v8.0 wads so you may as well install all the others. d2x v8.0 final pack
Then post a new sysCheck.