Beginner Gardening: Whats wrong with my olive tree, 1 by JudeanHills

JudeanHills wrote:
I live in east Orlando my olive tree is about 4 years old. Most of tbe tree look well but Some leaves (not all) are turning yellow then brown and falling off. More noticeable on the lower branches. Some small lower branches have dried out. And there is clusters of new growth close together in some spots that do not look right. Some leaves look alittle to small also
.Not sure if its a fungus or deficiency. I have photos for you to see