Steps to take screenshots in android-

i.) In the first method, you can hold the power button and then click on the screenshot option.

ii.) In the second method, you can swipe down your three fingers on the mobile screen.

iii.) In the third method, you can hold the power button and the volume down button together.

iv.) For more information check out this video: https://youtu.be/dZk3gaS_Rek