Research Flat Earth

Gravity pulls objects toward the center of the Earth.

If the Earth were flat, gravity would pull sideways at the outer edges.

Gravity does not pull sideways anywhere on Earth, ergo the Earth is not flat.

Gravity is an unproven theory. It's called relative density & buoyancy. We live on a flat stationary plane. No optical experiment shows any curvature or movement. You've got a lot of homework to do.

Are you suggesting that gravity doesn't exist?