Turn off Phone Without Power Button: Scheduled Power on/off, Via Accessibility Menu, Use Third-Party Apps, Use ADB Command, Use Bixby for Samsung Phones, Turn off Samsung with Quick Panel
Samsung’s Bixby voice assistant gets a lot of hate—some of which is fair—but it’s not as completely useless as some people may think. The “Bixby Routines” feature on Galaxy phones is surprisingly good. You should use it.