You're about two clicks away from the largest compilation of arguments, past and present, that I'm aware of. You could try the wiki and the refs therein.
I echo the Wiki reading - something I should have done before just questioning everything, because whether I agree with the theories put forward or not, there are explanations for a lot of things that will allow you to delve deeper into the things that maybe puzzle you most. In particular, I'd start out by maybe reviewing the following two major theories that are needed to explain a lot of what FET relies on:
https://wiki.tfes.org/Electromagnetic_Acceleration - explains many things including why the Sun doesn't illuminate the entire surface at once, why we only see one face of the Moon etc.
https://wiki.tfes.org/Universal_Acceleration - explains gravitation
There are many things out that demonstrate curvature, and one of my go-to references is the Rainy Lake Experiment:
http://walter.bislins.ch/bloge/index.asp?page=The+Rainy+Lake+ExperimentIt's a modern repeat of the Bedford Level Experiment carried out on a canal.
If you can't gather from my response, and for your demographic analysis, I'm of the round Earth mindset but am here to learn more about FET, the what's and the why's.