Personal automations automatically trigger a series of actions to work in the background, so you don't have to toggle them yourself. There's a wide variety of personal automations, including: Airplane mode, Charger, Driving, CarPlay, Commuting, Alarm, Sleep, etc.
Enable a Personal Automation
Go to the Shortcuts app
Tap Create Personal Automation, if this is your first time using it
Tap the Automation you want to enable
Click Next and choose your preferred actions and preferences
After this, the automation will either run or ask you to run it depending on the which setting you choose in the next task.
Disable a Personal Automation
Go to the Shortcuts App
Tap the Automation you want to disable