You ignore the obvious along with the claims of Flat Earthers that people have never traversed the "south pole". I remember I demonstrated to you how radio waves provided evidence against a Ball Earth, but you couldn't understand the math.
I doubt you then will understand this, where there is no math. Why the world-wide government enforcement against exploring Antarctica? Why isn't Antarctica used as a shortcut for flights? Ball-Earthers can't provide satisfying answers to these questions, but you are free to ignore them.
Do you know anything about history? People have sailed around Antarctica. Of course, you call them liars. People have explored Antarctica, including
Sir Robert Falcon Scott (1868-1912)
Roald Amundsen (1872-1928)
Sir Ernest Shackleton (1874-1922)
Sir James Clark Ross (1800-1862)
Sir Douglas Mawson (1882-1958)
Sir Edmund Hillary (1919-2008)
None of them came back and said, "Hey, the world is flat!" And FYI, NASA was not in existence then. People are free to visit the Antarctic, so your premise is false. It's a potentially deadly place, so tour guides need to be approved. That's all there is to it. You could go yourself, but that would threaten your self deception with the truth.
Radio waves prove the ball earth. Your maths is simply wrong. I know, because radio and radar were my specialties in the RAN. That the earth is a ball is demonstrable by real world physical characteristics. You don't need a maths degree, simply open your eyes and observe.