You just embarrassed yourself since you don't seem to realise that the picture was taken with a fisheye lens (go pro). If you were to continue the fake curvature you would end up with a ridiculously small ball earth.

You are not that stupid to believe this, are you?

Here is an example how the always level horizon looks like from a weather ballon, multiple times higher than the altitude of Mt. Everest:

My advice to you would be to look into things first before posting BS on the internet.

Have a good day & peace on the stationary plane