There are interpreters that are native Mac applications. I don't have a Mac and can't walk you through anything, but the two main ones I've heard of that are available for MacOS are Spatterlight and Gargoyle.
Gargoyle is cross-platform and available on Windows and Linux as well, and uses the 'git' VM engine for Glulxe games (which includes TrapQuest). Spatterlight apparently uses the slower but more official 'Glulxe' original interpreter, at least according to IFWiki, so might be slower at running the game.. But is also not cross-platform, making it more native to MacOS. It might give a more smooth experience for your platform as a result.
I do know that Gargoyle has proper gamma correction for font rendering, that can optionally be configured in its config file. I know that because I contributed that code myself; it already had gamma correction, but it was implemented wrong. I also know that almost nobody else cares.. But it makes dark mode look fantastic, IMO.