
One strong possibility is that the severe winter had its effect on your fig. It can take two or three years for plants to recover from bad weather. You can prune off any dead branches now, and follow pruning instructions in the following years: https://www.gardeningknowhow.com/edible/fruits/figs/pruning-fig-trees.htm
To be absolutely sure there are no pest or pathogen issues going on, you can take some leaf and branch samples to the Extension Service for analysis. This link will help you locate one: https://www.gardeningknowhow.com/extension-search/