You might have seen a hundred questions already by the same title so let me just tell you why mine is different:
Here's the error:
emulator: ERROR: x86 emulation currently requires hardware acceleration!
Please ensure Intel HAXM is properly installed and usable.
CPU acceleration status: HAX kernel module is not installed!
In this case you can download and use
ARM images that do not need hardware virtualization instead of using
x86 system images. Need to tell you that ARM images will be very slow compared to x86 images.
You can download
ARM image of respective APIs by selecting this option.