Regarding why the Sun appears to rise and set to the south.
I was trying to visuallise this myself so I made a few pictures that I think help to illustrate it.
So this is just a rough Earth at the middle of a southern hemisphere summer.
The pink line is a line going from (roughly) Perth to the Sun.
The first picture is at sunrise and shows that the line lies to the south of the latitude line from the viewer.
The second pic shows sunset and shows the same.
The third pic is at roughly midday and shows that the line to the Sun is slightly to the north.
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