[Nexius]

If the sun was a spotlight, I assume it would only emit light downwards. But the moon is next to the sun in the flat earth model, so how does the moon reflect the light of the sun at nighttime.

[Pete Svarrior]

If the sun was a spotlight, I assume it would only emit light downwards.

Stop assuming, start reading. You're expected to familiarise yourself with the basics before posting here.