Brown leaf spots are common on new Ficus Lyratas, usually because they are adapting to reduced light levels. These are not low light plants and they must be located in front of and close to a sunny window. Even so, expect some of eh older leaves to spot, then yellow and then fall off. New growth should be healthy and spot-free.
Lyratas do not tolerate dryness very well. If it is in its nursery pot, then a thorough watering once per week is usually about right.
