PCB Design position of flyback diode for motor
does it physically matter at what position my flyback diode for my
motor is ?

Ideally, the diode should be as close to the motor as possible in order to minimize the circuit-loop in which the flyback current flows. This is to reduce, as far as is possible, EMI into other circuits.
Other than that, there are no special considerations unless you were designing a motor interface to something that was intended to be used in a flammable gas area (unlikely of course but I need to mention it).