More driving button mapping please?

There is now way for me on borderlands 3 to set this button layout scheme.
RT-accelerate.
LT-break/reverse.
RB-prim fire.
LB-sec fire.
A-boost.
B-change seats.
Y-exit vehicle.
L3-horn.

Why?

The best I can do is have
LT-accelerate.
LB-break/reverse.
RT-prime fire.
RB-sec fire.
I would even accept this if I could switch left from right but I cant for some magical reason.

Gearbox pls fix?