I live near a large body of water. I have watched large freighters and cargo ships disappear over the curve of the earth. Watching them through a telescope, they would disappear from the bottom up. The key is to watch them through the telescope the entire time. Your naked eye isn't good enough to observe this happening.
I saw many dishonest flat earth videos where they claim that watching ships disappear from their naked eyes. Then they use a zoom camera to see the ship again. Duh! Of course they will see it again because the human eye is weaker than the zoom lenses. If they would have continued to watch the ship through the zoom lenses, they would see it disappear from the bottom up.
Try it for yourself. Simple proof of the curve.
I can't tell if you really are that stupid, or you're just pretending to be that stupid.
With your eyes you can see a ship disappear into the horizon from 6 miles away.
WIth a 8x optical zoom you can see a ship disappear into the horizon many miles beyond the first test.
With a 16x optical zoom you can see a ship disappear into the horizon many miles beyond the second test.
With a 32x optical zoom you can see a ship disappear into the horizon many miles beyond the third test.
You can continue using more and more powerful telescopes to see these ships disappearing into the horizon up to 250 miles away with the strongest of the commercial telescopes.
So tell me exactly where the Earth starts to curve?