There is no physical proof of the ball Earth theory, none. No one has every given any. It is impossible because there is no curve. No curve not a ball. Not a ball Earth can not be a sphere. The ball Earth theory is just based on math, assumptions and belief. Believing in a theory does not make it true. A lie often repeated does not make it truth, period.
1. Ships sink below the horizon bottom first
2. Lighthouses are built with the curvature of the earth in mind. Otherwise why do they make them so tall?
3. You can personally take a plane trip across Antarctica
4. You can watch time lapse video of the midnight sun down there
5. If you think they are fake then the southern tips of South America and Africa and the southern parts of Australia get long daylight hours during the winter
6. Ships and planes use navigations based on a round earth.
You can pick at those if you want. Those are just a few.
Oh, one more, sunsets, sunrises, and seasons.