Hi,

The video you referred shows how to find Autosaved copies of drawings.

But .bak file you see in the sane folder as the drawing is not autosaved copy, it is the result of manual savings. On Mac you cannot change the location of such .bak files as MOVEBAK command is not available on Mac. You can only turn off creation of .bak files by changing ISAVEBACK sys var to 0 (zero).
Here you can find an overview of how backup and autosave works in AutoCAD for Windows:
https://knowledge.autodesk.com/support/autocad/learn-explore/caas/sfdcarticles/sfdcarticles/Understa...
On Mac it is the same, except MOVEBAK option.
Plus, I don't know why both type of files (.BAK and .sv$) created in Autosave folder.

Now about autosave folder on your Mac.
Can you make a test?
- create TMP folder on your Desktop
- in AutoCAD preferences check that you have autosave enabled and set time to 2 minutes
- in AutoCAD preferences change Autosave location to the folder you created in first step
- restart AutoCAD, create new drawing, draw something in it
- open some of your drawings and work on it for 3-4 min
- move back to the drawing you created after you launch AutoCAD, try to make some changes in it.
Do you see information about automatic save at the command prompt? Was autosave copy created in TMP folder on your Desktop?