I suggest you use the online Emulator FIRST (can be skipped if desired.)
Try out the emulator online here - https://www.commanderx16.com/emulator/x16emu.html It’s quick and easy and gets you playing with the prototype system with a single click. Go ahead and type in:
10 PRINT “THE X16 WILL RULE THE WORLD!”;
20 GOTO 10
RUN
If you want to try out some of the great software for the X16 that has been developed, browse the downloads https://www.commanderx16.com/forum/index.php?/files/, select a program and then click on the “Try it now” button.
I mention the above since it will work on your MAC with little fuss and no significant effort on your part. It may leave you content, or firm up your enthusiasm to get the emulator installed and working on your machine. See the next item below for the detailed install notes.