At times it can become possible that your Mac App Store, Mac Steam, or Mac Epic Game Store save data is corrupted which can cause game play issues. As an attempted fix you can try these following steps to delete your save data:
The location of game saves on the Mac platform can vary per platform but should be in one of the following locations:
Once you locate this file, delete it. Then try launching your game again. It should create new save data once you hit the 'Start' button on the first game screen.
If you are unable to see any of the folders listed above, they may be hidden. Here is how you unhide folders:
Unhide your hidden files with a keyboard shortcut (available on MacOS Sierra and higher) - use 'CMD + SHIFT + .' while in Finder.
You can use 'CMD + SHIFT + H' to quickly get to the Users folder while in Finder.
'CMD + SHIFT + G' will bring up a file path text field in Finder.