Fate is the part of your life that is unable to change such as your nationality of origin, your skin color or your primary languages.
Destiny is the part of your life that may be changed to a degree such as your education qualification, your literacy or your second language. 

Anyway, just spotlight on something that you may alter to a better degree rather than the part that you are overall impossible to change. 

with future'' means like( in my future I'll be able to speak english )  and  fate is more ,( the humanity fate was decided ) , sounds more powerful

I think it , but I'm not a native speak , and I can't give you a really definition.