I've encountered enough flat Earth nonsense here that I've assembled a couple of easy cut-n-pastes:
Flat Earth?? Go to Chicago. Head out on Lake Michigan on a calm day. Watch the city sink into the lake!! No, not really; it's just a bit beyond the curve of the Earth.
Go to Lake Ponchartrain.
Check out the power lines. Take some pictures.
[media=https://youtu.be/ipqronPSXGM]
Then check out the causeway. Take some pictures.
Did they build all these wind turbines partway under water? Nope. Curve of the Earth again.
I say "NO, the Earth is round, not flat" Here's a bit of the "round Earth" evidence:
I particularly liked this one proving the "eye level horizon" claim is false
https://flatearth.ws/water-level-horizon
I also liked this one disproving claim 6 (just google for Ponchartrain power lines; hundreds have shot this image)
I liked this one disproving claim 20
And this one disproving claims 34,35
And this one disproving claims 56,57