Try to concentrate on the entire grey/white Milky Way BAND which logically is observable all around the Earth.
The “band” as view (naked eye) from Earth is only a tiny fraction of the Milky Way that can be observed.
The band is not the entire Milky Way.
As I have already explained to you before, our solar system is located on the Orion spur or minor arm. And the Orion spur is located between two spiral arms:
- the Sagittarius arm, is the inner arm that block our view of the galactic centre
- the Perseus arm, is the outer arm.
The stars (Polaris, Sirius, Rigel, Betelgeuse, the three stars on Orion’s belt) and nebulae (Orion Nebula, Horsehead Nebula, Helix Nebula) are located on the local portion of the Orion spur.
What I mean by “local portion” is that they are located near or in close proximity of our sun. With the exceptions of the Helix Nebula and Horsehead Nebula, those other objects I have mentioned can be observed without telescope.
The local portion of the Sagittarius spiral, that we can see using the telescope, are some nebulae, like the Trifid Nebula, Lagoon Nebula, Omega Nebula, Eagle Nebula and Carina Nebula. Except for the last two nebulae that I have mentioned (Eagle and Carina), they are all located in our sky of the Sagittarius constellation.
What you do see at night, without the telescope or binoculars, are only local stars, planets and impenetrable cosmic dust from our arm (Orion spur) and a small part of the Sagittarius arm.
As you know, the Sagittarius A is located in the Sagittarius constellation too, but it isn’t visible to optical telescopes. It required radio telescope to detect radiowave of Sagittarius A. If Sagittarius A cannot be view naked eye, then so would be the Milky Way’s centre.
No one, past or present, can see the centre of the Milky Way. And no one can see the “entire Milky Way”. It is just not possible.
Most of the stars in the Milky Way aren’t visible to us (naked eye, meaning no binoculars and no telescopes).
Until you understand this, you have your head buried in the sand.