Need help with keybinds on Console

I feel fine with the button layout i have right now except for crouch.

I use L2 for Jump, L1 for flight and then R1 for primary fire and R2 for bubbles. (I do this because then it's easier to hit the animation cancel of the primary) Then L3 for beam and R3 for meele. Ult on left bottom cross just above L3 and Crouch on O.

The problem i'm having is, while i keep flying, to swirm up and down. While i am aiming with R3, i obviously can't push crouch to go down. What keybinds are u using to mitigate this issue?