Those huuuge cut in half sunsets really make an impression though and after watching those again and again it's hard to comprehend it in any other way than what we were told our whole lives---it's moving downwards "behind the curve". (even though you can't see that curve from left to right)
What would be an excellent experiment would be to send up a high-altitude balloon with a camera and record both one of the huge sunsets from ground level right below it and then watch what it looks like from way high up, and compare the two. At about 120,000 feet you're going to get very little moisture, refraction, etc.
There are two types of sunsets recorded from the ground ...
1) where it seems to shrink very little and
2) where it shrinks very noticeably
So which of these is the reality?
Moisture in the atmosphere makes things seem bigger. What would cause the sun to appear smaller when it really wasn't? I've never seen a glober answer that question. They merely show an alternative picture where it doesn't get smaller. That's dishonestly just looking at one side of the issue, which the globers are famous for. I've noticed that the videos where the sun shrinks the most are in low-humidity environments, like in a desert or above the clouds, but the big sunsets tend to be over the ocean (with lots of humidity).
FEs look at both. They'll put together videos of an object that's cut off at the bottom, but then go back later to the same location and show the object in full view. Globe earthers never do that, but simply ignore the contrary evidence. So again, with a picture/video taken of the same object from the same place, if one is cut off and the other in full view (when it shouldn't be due to curvature math), then there are two possibilities.
1) atmospheric conditions sometimes block the bottoms of objects that would otherwise be fully visible
2) atmospheric conditions refract light over the curve of the earth to the viewer
I find #2 totally unconvincing, especially when you have photographs of mountains from over 200 miles away that should be hidden under a few miles of curvature. To me that's absurd. I've seen hundreds of such videos, and I find it ridiculous that refraction would magically bend light exactly parallel with the curve of the earth.
Then you add to it tests like what the "convex earth" group from Latin America did, all kinds of absurdities regarding the alleged rotation of the earth, globe earth doesn't have a leg to stand on.