Sorry my reply is so slow >.< I'm badly behind on responding to everything atm thanks to Christmas stress and generally being ill, haha.
It actually is fairly normal that it's being silly on Mac x3 I don't know what it is about games on itch and Macs, but it's a constant problem that Mac users seem to have :( I don't own one myself, but people who do have told me it's like a security thing where cos games are unsigned, they can't get past Mac security >.<
The good thing is, there are some fairly easy workarounds to get games working :3 People have told me the easiest thing to do is just download the itch.io app and then download all games through that app, then they have no issues, but there are other solutions too! I put together a list of stuff people have said works for them over the years, and you can find it here:
https://melancholy-marionette.itch.io/darling-duality-winter-wish/devlog/227880/...
The post is on one of my other projects, but the suggested solutions apply to all of my games here :3
Hope you get to have happy holidays! ^-^