Minecraft is not an Apple product. If you are having issues with Minecraft, contact the developer.
https://www.minecraft.net/en-us/store/minecraft-java-edition/
It appears that since it is a Java based software, you may need to check your Java version to ensure it is compatible.
http://www.java.com/
Older versions of Java may be available for download also through if they are needed:
https://support.apple.com/kb/DL1572?locale=en_US
If there is another version of Minecraft for the Mac, https://help.minecraft.net/hc/en-us should be able to help.