I know I'm a little late to the party, but is there not a 64 bit for macOS? Only having a 32 bit version seems a little odd as macOS hasn't had 32 bit application support since Mojave. (which was like, 5 versions ago now?)
although i ended up accidentally changing my nand with no way of going back bc i didn't know you needed a gamecube controller to restore it (i have a wii minus/1.1, which doesn't have gamecube controller support)
and if i find the sd card i have my NAND backed up on, i can not only restore the NAND if i solder the right part in, but i can also put my NAND on dolphin, then i can play dolphin online, like PMEX Remix or MKWii Riibalanced