Hey hey! So glad to hear you've been enjoying the game :3 Thanks for checking it out!
I made a walkthrough a while back to provide some help if anyone needs a hand getting the different endings :3 Hopefully it is of some use:
https://melancholy-marionette.itch.io/the-hostage/devlog/567737/walkthrough-guid...
(I don't personally own a Mac, so I have no way of testing Mac builds, sadly :( In theory, though, all the same options should be in the Mac version that are in the Windows one because the game code itself is identical).