Battery Cell Supply for Arduino Nano Circuitry with Servo Motor, Ultrasonic Sens

Good day, My 9 volts battery seems cant supply enough voltage to my arduino circuitry. Will I be using 12volts battery cell instead? I just had the 9 volts cell in the Vin and let it supplied the whole circuit. It flactuated and goes banana.. But when I used the usb mini b cable it works fine.. Any help? I dont know the transistor thing I've read on some posts.. between Vcc and ground? sorry newbie here -_-