i will show you how to fix the controls for PS and Xbox controllers.
(Works with New "Alternate" control scheme)
i fixed the garbage controls, if you have a key mapper like Xpadder you can map the keyboard keys to controller.

Map Square/X with R to reload since you can't run while aiming it won't mix the controls
(or just keep it as Circle/B if you prefer them being seperate)

Since L1/LB R1/LB are switched
Map C to RB/R1 so you can aim and change targets. (change aim on keyboard is not paired with scroll down so you won't have mixed controls when scrolling through the item box also map can't be used while aiming so that won't interfere either)

(if you want to go the extra step map Z to right stick up and X to Right stick down so you don't have the reversed item box skip page controls it will not interfere with right stick 180 turn since Z and X aren't paired with change aim and map)