Fate is "force predetermining events", there is no predetermination. A gazelle is killed by lion or escape from the lion, is just accident, neither the gazelle have the free will that help it to escape, neither there is a fate that determine it to be the food of the lion.
Free will is the ability of agents to make choices free from certain kinds of constraints. Destiny or fate is a predetermined course of events. It may be conceived as a predetermined future, whether in general or of an individual
Just as I told, the Gazelle has the free will to run or not, but has no free will not to be eaten by the lion. There is no predetermination that the gazelle be eaten by the lion, depends on who can out run whom. Just catching the gazelle will not ensure that the lion is able to eat it. If the lion can eat it, it survive and tell the story, if not nobody knows about it.