! When I see pictures like this and when my teacher explained to me how electrons flow inside a wire I imagined electrons to be moving inside the conductor where there are the atoms or jumping on the inner surface of it not in the empty space in the wire
But the thing is I then learned that the more the diameter of the wire is the less resistance there is
Which lead me to thinking that they're actually moving in the emptiness and the resistance is made when the electrons there bump into the atoms of the inner surface of the wire (the only way I could convince myself of the fact that the more emptiness there is the more they're free to move and less the resistance) However each time I see a video about how electrons move there are always atoms and the thing is the conductor atoms can't exist in the emptiness!
Note: please don't answer using high level physics I've seen a couple of answers about the movement of electrons but they either explain it in complicated words or they make it very simple by comparing them with other objects which wasn't good for me because I started making wrong assumption based on the characteristics of the object used in comparison. I want to imagine it right.