My conclusion is that we do not know what shape the earth is.

The flat earth people have many points that are valid, some they say are proofs (but are valid in both cases) and some really screwy stuff that doesn't hold up to the slightest scrutiny.

What I can say for certain is that NASA are lying liars that lie.
You can look at their photo record to prove this. NASA disproves NASA.
NASA used to have a team of women who would touch up negatives (removing the stars) before sending them out.

I believe the earth is a shape that we don't even have a name for yet.
Many ancient texts describe the earth as multi-layered. Like an onion.