The Realtime GT Neo 2 doesn’t have any pre-installed Google camera. But like all other phones that don’t have a camera, you can install Google camera from the play store.
Yes, there is no preinstalled google camera on the phone cause the company developed its camera feature in the finest way possible. They want the users to try their camera features, so there is no pre-installed Google camera app on the phone, but if you want to use it, you can download the google camera app from your Google play store.