I have downloaded this game multiple times and it isn't working on my mac laptop. It's comes up with a notification that the file is damaged and cant be opened. What should i do?

Same here. Tried using different tools to decompress it and nothing worked.

That is the work of Gatekeeper in your OS. I usually run a terminal and a pair of typed commands to get the OS to treat the program as a trusted source, but it appears there is an easier alternative (SOURCE:  https://itch.io/t/1033075/the-super-simple-mac-gatekeeper-workaround). I haven't checked it myself but it is easy to do and doesn't involve monkeying around with your machine's code. If that doesn't work, just do an internet search for "mac gatekeeper workaround" and that should get you to other solutions to this frustration.