Sorry it took me so long to get to this, I’ve stopped receiving emails when people comment on here for some reason. Generally Mac permission errors can be fixed by manually providing the game read/write permissions, or simply moving it to the Applications folder before opening the game. This link can help with changing permissions on the folder. https://support.apple.com/sl-si/guide/mac-help/mchlp1203/mac
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right click the game file click open terminal at this folder type without the quotes "chmod +x "drag the game file here after you type a space after +x" press enter then type "chmod -R 777 "drag game file here again" press enter this overrides access then it will tell you the file was blocked by your computer go to system preferences > Security & Privacy then click allow anyways at the bottom, this should get you where you need to be, I'm a mac user too