MAC client problem

Hi all. Sorry if this problems been already solved somewhere, but i used search and it found nothing for my topic.
My inquiry is very simple: ive downloaded a mac client on my laptop, tried to launch it according to instruction and it just doesnt work (without any additional explanation says "Cant Launch WoW"). I tried opening it and going MacOS - Recources - WoW, but this doesnt work either and this text file seems to be... broken. Its filled with strange symbols, not something that should resemble some sort of code.
My OS is High Sierra, 10.13.6. Thank you (and a Happy New Year). I tried asking warmane support, but there is no "general inquiry" category there, only ban appeal.

Just an update: i found all the guides for mac installing, tried the console ones and they didnt work. Ill try again later by redownloading the whole thing.
https://forum.warmane.com/showthread.php?t=51436
Do i understand this correctly - i need a PC client for it?