GooglePlay Installation for Emulator (Marshmallow/Noughat)

[maqzee]

I have tried so many options/blogs/scripts to install GooglePlay for Emulator (running through Android Studio) but it never works. I have seen so many different errors

1. Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE]
2. Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES]
3. No space left on /system

Why is it so hard to install GooglePlay on Emulator, can someone provide steps or GApps that work with Marshmallow/Noughat.

Here's the gist of what I have tried :

1. Copy GApps from The Open GApps Project [ Platform: x86_64; Android: 6 & 7; Variant: full ]
2. Extract the zipped file to temporary folder and then extract following apks from it to another folder
* gsfcore-all/nodpi/priv-app/GoogleServicesFramework/GoogleServicesFramework.apk
* gsflogin-all/nodpi/priv-app/GoogleLoginService/GoogleLoginService.apk
* gmscore-x86_64/nodpi/priv-app/PrebuiltGmsCore/PrebuiltGmsCore.apk
* vending-all/nodpi/priv-app/Phonesky/Phonesky.apk
3. Try pushing these apks through this script

IMAGE_NAME=Nexus_5X_API_24 #Nexus_5X_API_23
emulator @${IMAGE_NAME} -no-boot-anim -writable-system &
adb wait-for-device
adb root
adb shell stop
adb remount
adb push PrebuiltGmsCore.apk /system/priv-app/
adb push GoogleServicesFramework.apk /system/priv-app/
adb push GoogleLoginService.apk /system/priv-app/
adb push Phonesky.apk /system/priv-app/

I would really appreciate any help !!