I want a setup where in my left hand I have a move navigation controller running through motionjoy, and in my left: a mouse. sort of like the splitfish fragfx but I don't want to get I know this can ...

Cyberpunk 2077 by default binds a dodge mechanic to double tapping your movement keys on keyboard by default. There is currently no UI element in the in-game's Key Bindings to change this.