Can I change my controls to wasd because I'm on a chrome book?

Ok, I had this question too, because I'm playing on a laptop, and I've found that if you switch to left handed mode you can have you right hand on the mousepad to use the little steering joystick, and your left hand can push the Q key, which will attack. It's not the best solution, but I can't think of anything better. To switch to left handed mode, pause and go to main menu,

and then go to settings, the classic gear icon in the corner. It should be be under controls. Hope this helped!