Do any engineers think the Earth is flat? It doesn't matter, because they don't account for it at all when they work.
Please show some evidence for this claim. You might get a surprise when you look at what Civil Engineers do.
You will see further from higher up because the Pythagoras theorem. Your line of sight increases with altitude. Draw a triangle and try it. Now try to draw a diagram representing your line of sight in relation to a constantly curving away from you Earth. Not so easy is it.
Please show how "You will see further from higher up because the Pythagoras theorem."
How could you use "the Pythagoras theorem" to prove that "you will see further from higher"?
In the Globe that is an easy task.
We have been often told that "we need evidence".
So yes, we will need some kind of real evidence that things work as you say they work, not a diagram.
I won't be so rigid, and a sound diagram with calculations would be a start.
I don't know what "Now try to draw a diagram representing your line of sight in relation to a constantly curving away from you Earth. Not so easy is it." is meant to mean.
Being easy or not is no evidence for or against the Globe or Flat Earth.
If being hard to explain was evidence, the Flat Earth wouldn't stand a chance!