It is you who chose to use the word. You should have checked the meaning of the word before using it.
Predestiny, or predestination, means something has been decided in advance, especially by divine command or
fate, and cannot be changed. For example, you might say someone is predestined to be a star if you believe the universe wants them to be famous. The word comes from the Latin word praedestinare, which means "determine beforehand".
Predestiny is a popular concept in religious doctrine, where there is a lot of interest in what the future holds and what people should do. For example, some Protestant Reformers, including John Calvin and Huldrych Zwingli, believed that God predestines both salvation and damnation. The Catholic Church also has views on predestination, including the idea that God does not predestine people to go to hell, but that people must willfully turn away from God to do so.
Predestination = fate = fatalism.
On the issue of me "bearing false witness".