you cant use a mouse fore looking around a world. and I will clarify this PLEASE DO NOT REMOVE MOUS AND KEYBOARD SUPPORT JUST BECAUSE PEOPLE CANT LOOK AROUND WITH A MOUSE. you can. you jjust need a gamepad and then the mouse cursor that android uses allowes you to look with a mouse just with the problem of your screen being the borders for how far you can look. it migjt be better that if a mouse is connected via usb or bt its registered as a controller for the mouses sliding gyro sensor to look around and left click and right click work like normal