ClickLock: A Mac menu bar app that locks your screen with just one click Posted by marcosmr on Tuesday December 03, 2019 @06:43PM from the clicklock.xyz dept. https://www.clicklock.xyz/ ( 1 comment | on HN )
or System Preferences > Keyboard > Shortcuts > App Shortcuts > Lock Screen (Cmd+Shift+L)
or Add Lock Screen to Touch Bar.