only 764 devices suppoted on google play

I made a game recently. Google play says, only 764 devices support this game. I didn’t change anything in the Android Manifest file. I have remade it and it shows the same. And it says that around 4500 unsupported devices. Can anyone help me out with this. Thanks in advance

In PlayerSettings → Other Settings you can choose Minimum API Level and Graphics Level. If you set these high (such as API Level 16 and OpenGL ES 3.0) fewer devices will be supported and vice versa. Basically you want to set these as low as possible.