Maddie Keys,
unfortunately, there's no 64-bit version of TE2013, as it uses an old engine that doesn't support 64 bits. So TE2013 doesn't work on MacOS Catalina.
You can either :
- downgrade to an older version of MacOS or use Parallels to run an older version of MacOS (both are hard to do)
- install Windows and dual boot to it to play the Windows version of TE2013
- buy TE4 ; but it's only in its Alpha phase for now, and you need a bit powerful GPU or IGP to run it, and there's currently no demo ; more info here :
topic15-30551.php- try Tennis Elbow Manager 2 : if you don't like management, you can lower the coaching difficulty to its minimum, so it'll be easy & fast to manage your player ; and you should activate "Settings -> 3D Match -> Manual Player Controls" ; you can get the demo from here :
https://www.managames.com/tennismanager