Does mercutio believe of fate or destiny

He is a young gun and having fun, though he is also a pretty layered character. I think he does believe in fate and destiny to a degree, though like most of us, doesn't spend too much time placing his fate in the hands of the gods, he creates his destiny by creating his destiny - until his fate is taken outside of his control. I think at first he did believe in creating his own destiny until the gods took his fate.

Fate. Have fun with Romeo and Juliet!