Why does my mouse keep disappearing on my MacBook Air?

Hello books_4,

Thanks for that info and for choosing the Apple Support Communities. If I understand correctly, you are unable to find the cursor on your MacBook Air unexpectedly. First, check your Cursor preferences in System Preferences > Accessibility > Display and here is more info:

Change Cursor preferences for accessibility on Mac

Next, use safe mode to start up your Mac as it does the following things:

• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts
• Deletes font caches, kernel cache, and other system cache files

Log in to your user account and test the issue while in safe mode and then restart normally and test the issue again.

Use safe mode to isolate issues with your Mac

Graphics performance limited in macOS Recovery, safe mode, or Guest User mode

Cheers!