Ask-a-Dave's-Gardener: Fiddle leaf fig Leaf issues Need fast help, 1 by Roseraven23

Roseraven23 wrote:
I’m new at caring for a fiddle leaf plant, but I’m not sure what I’m doing wrong as to over or under watering and getting brown spots on the leaves . I wait till the top few inches are dry before watering. So the care sheet says leaves turn Brown around the edges if not enough water. And leaves turn brown in the middle and edges if too much water and drop off from the bottom of the plant. It gets plenty of indirect sunlight so I don’t feel it’s an issue w lighting. And I’m concerned about how the stems look. According to the photos are the stems normal? And what is causing the brown on the leaves ? Also i plan on fertilizing tonight.