The reason Mortal Kombat 11 is not available on the Google Play Store is due to the game's mature content, which includes violence, blood, and gore. Google Play Store has strict guidelines regarding mature content, and Mortal Kombat 11 doesn't comply with those guidelines.
The crux of the sentence, the desperate heart of the plea, is “no verification.”
If you want to experience the visceral combat of MK11 on your phone safely, you have two legitimate paths: playing the official mobile title or using cloud/emulation technology. 1. The Official Experience: Mortal Kombat Mobile