The Fastest Way To Lock Your Screen On Your Non Touch Bar Mac
1
Configure your Mac to require a password when the screen saver begins
Open System Preferences > Security & Privacy.
Make sure “Require password” is checked and the dropdown says “immediately”.
2
Hit Ctrl + Shift + Eject to lock the screen
Ctrl + Shift + Eject is the keyboard shortcut to lock the screen. This will require a password whenever the screen is unlocked.