Here's my introduction:

There are some people who believe that fate decides everything and that free will is a fantasy only fools believe. Some believe free will is possible and powerful, they see fate as an option for the lazy. But listen to the great author, Shakespeare; free will works for fate. Shakespeare has written many great plays but this is about Julius Caesar. Shakespeare gave completely opposite opinions to 2 of the more important characters; Caesar saw fate to be firm and unalterable, and Cassius believed through free will you could change fate. In the play Julius Caesar, Caesars beliefs cause him to be stubborn and ignore the help around him, Cassius shows us that free will is something of the mind; but in the end, free will submits to fates decisions.

Is it good? Is there anything specific I should change on it?

Your introduction is engaging and sets up the contrasting views of fate and free will in Shakespeare's Julius Caesar. However, there are a few suggestions that might enhance its clarity and flow:

1. Consider rephrasing the sentence "Some believe free will is possible and powerful, they see fate as an option for the lazy" for better clarity. You could add more context or provide a smoother transition between the two viewpoints.

2. Instead of saying "listen to the great author, Shakespeare," you could introduce Shakespeare's perspective by stating "Shakespeare, one of the greatest authors of all time, explores the interplay between fate and free will in his renowned play, Julius Caesar."

3. When you mention Caesar's beliefs, clarify how they specifically relate to fate. For example, you could say "Caesar adamantly believes in the firm and unalterable grip of fate, causing him to be stubborn and dismissive of the help offered to him."

4. Similarly, explain how Cassius's belief in free will contrasts with Caesar's perspective. Mention that Cassius believes through the power of free will, individuals can actively shape their own destinies.

5. The phrase "free will submits to fate's decisions" could be rephrased to make the connection clearer. For instance, you could say "ultimately, as the play unfolds, free will finds itself entwined with the forces of fate, revealing the complex relationship between choice and destiny."

By implementing these suggestions, your introduction will become more cohesive and provide a stronger foundation for the subsequent analysis of fate and free will in Julius Caesar.