How to use assistivetouch feature on iphone

Go to Settings > General

Tap the Accessibility

Tap on AssistiveTouch

Turn AssistiveTouch On

Go to your home screen, you'll notice an icon that appears on the right bottom of your screen, the screenshot doesn't show the icon, the next step will explain the options when taping the icon

The main idea of this guide is to use the physical home button on the iPhone as less as you can, by this it will live longer, U can explore the other options, such double tap the icon, screenshot, etc