How to rotate FPSController in mobile?

Please I need your , I just began learning UNity and i have faced a problem which is : -IN PC mode the FPSController can rotate using Mouse BUt In android I search for a way to use like our touch not in a joystick but just a touch to rotate the player lik the mouse did. PLease help me!

you can use this asset it’s free and easy to use it Unity Asset Store - The Best Assets for Game Making