Dolphin does not run games directly from a .7z archive. You cannot simply "Load File" and select the 7z. You must extract the contents first.
How to use 7z files with Dolphin (safe steps) 7z file dolphin emulator 2021
What is a 7z file?
Dolphin Emulator , in its 2021 releases and beyond, cannot directly play games stored as .7z files Dolphin does not run games directly from a