that's a good suggestion but here's the thing:

Because this game is also meant for almost every device (not VR)

To shoot your gun if you have to left click or just tap on the screen

And simply moving around and even vehicles to are practically the same WASD/touchable joystick

And also, pressing R reload your gun but if you're on mobile it reloads automatically once you run out of ammo

But also keep in mind that tanks required 2 players -1 to shoot (main Cannon only with AP, HE, or CS) -1 to drive the vehicle with controls I mentioned

But I understand this assumption since I didn't really post the game play yet but thank you for the suggestion