arduino pro micro error loading program

im having trouble loading the arduino i watch a few video they all seem to get the progress fairly straight foward. but mine gives me the error below is copy from arduino app

thanks ahead for any help giving for this issue

Arduino: 1.8.12 (Windows 10), Board: “Arduino Micro”

ARDUINO_BUTTON_BOXV2:7:10: fatal error: Keypad.h: No such file or directory

#include <Keypad.h>

^~~~~~~~~~

compilation terminated.

exit status 1
Keypad.h: No such file or directory

This report would have more information with
“Show verbose output during compilation”
option enabled in File → Preferences.