You should not be able to see a lighthouse from sea at 50+ miles distance, another observation disproving the curvature claim. Without curvature there is no globe, so the theory is kaput.

As to why you see more of it when closing in, look up angular resolution and perspective, but this observation can easily be recreated from the beach in calm weather to show the same results, hence why I shared a couple.

No amount of nonsensical "gotcha!" memes can help the globe model prove its claims - our world is observably flat/level. We see way too far.