The earth is not a ball, that has been proven.

How do you know, and how has it been proven? All "proofs" I have seen thus far rely on poor initial presumptions about both models and misapplication of mathematics. It seems to me people are often mistakenly confident in alleged disproof just as they are in flawed proofs.

An argument can be challenged based on its form (formal fallacy) its relevance to its propositions (informal fallacy) or the facts supporting its propositions. Sure, the Earth looks flat. The horizon appears to be a horizontal line. But why does that really disprove the idea of the horizon as a very small circle of a sphere on a very large spheroid?

I'm not an astrophysicist, but I can draw a diagram to illustrate a concept. Polaris should be visible south of the "equator" by any flat earth model with a celestial dome, and we should be able to calculate that dome height with basic geometry, unless my model and math are fundamentally flawed.

Saying that people in power lie does not mean the inverse of their statements are true. The best lies are not complete falsehoods, but divergence from truth with enough tendrils of apparent support to get people to buy into the false aspects.

It wouldn't surprise me if we live on the inside of a ball, four time the size they say the globe is.
But, i just do not know.

How would we model it and test it? That is how we could know, or at least have data to support or dispute a given model.