To bring up App Switcher, swipe up from the bottom of the screen, then pause in the center of the screen. Then, to browse the open apps, swipe right, then tap the app you want to use.
You can also quickly switch between open apps on an iPhone with Face ID by swiping right or left along the bottom edge of the screen. But try App Switcher first, it'll provide clearer orientation.
https://support.apple.com/guide/iphone/switch-between-open-a...
You can also quickly switch between open apps on an iPhone with Face ID by swiping right or left along the bottom edge of the screen. But try App Switcher first, it'll provide clearer orientation.