Oh I'm so sorry to hear that! Technially it should be alright, I just select the Mac build version for it. Seems I'll have to keep investigating the problem. It's hard for me since I don't have Mac, sorry!
Your Mac build does work, but it's not notarized. Apple wants users to only trust Apple's App Store so when you open an unsigned application macOS acts like it's scary/broken/untrustworthy. You can force it to run anyway, and I left a comment in this thread with the steps.
If you want to make an app that "just works" on Macs, it needs to be notarized. RenpyTom has info about that here. https://patreon.renpy.org/macos-notarization.htmlUnfortunately that process needs a Mac. A not-notarized app is definitely better than no app though. Game runs great once you bypass the checks.
Oh and I really like the game too BTW. Nice work!