I've tried most of the Mac builds of pcsx2 and I just can't get any of them to work. I've tried pcsx2 for lion and snow lion, pcsx2ce, and the standard PCSX2 application (all-in one I think). For the latter, it won't recognise my ps2 bios (and the default pathway for bios' doesn't even exist). What am I missing here?

FYI I'm running a 2015 MacBook Air with Mojave (can't update because I literally have no HD space left).