In order to customize your Call of Duty Mobile player, you will need to access the game's settings menu. Once you are in the settings menu, you will see a variety of different options that you can change. These options include things such as your player's name, appearance, and loadout.
You can also change your control scheme in the settings menu. This is useful if you want to try out a different way of playing the game. For example, you can switch from using a joystick to using an on-screen button layout.
Finally, if you want to change the way that your player sounds in the game, you can do so by accessing the audio settings. Here, you can choose whether or not you want to hear your own voice, as well as adjust the volume levels for all of the game's sound effects.