On a busy Disc, one finds it hard finding time addressing an amateur video when I have seen other FE'ers post some mathematical proof that I do understand showing the round Earth can't be true.
Look around this site and you WILL find reasons the Earth is flat. Include the Believers section, as well.
I have seen numerous flawed arguments claimed as proof, but none which hold up to rational scruitiny.
I'm not one of those "I told you so" people and don't want to become one, but when I say you will agree with FE'ers after a thorough search, I challenge you to prove me wrong.
That all comes down to what constitutes "proof".
I have done a thorough search. For the RE side I have found a single model capable of answering pretty much everything people have thrown at it.
The one issue is dark matter/galaxy rotation curves and the like.
On the FE side I have found numerous contradictory models which simply don't work.
The only way to make the FE models work is by sprinkling them with magic, manipulating space and light to make it completely indistinguishable from a round Earth.
I would say that after a thorough and honest search with rational thought on what has been found you will agree that FE is fundamentally flawed. I challenge you to prove me wrong.