do you agree with the view that both cassius and antony place personal gain above the general good explain

Cassius is in this for himself. Brutus summed it up best when he accuses Cassius of wanting too much gold,

"Let me tell you, Cassius, you yourself

Are much condemned to have an itching palm,

To sell and mart your offices for gold

To undeservers."

Cassius constantly looks for ways to derive personal gain from a given situation. He plays the friend to Caesar while he waits to betray him, not for the good of Rome, but for his own power and wealth. I think Antony is a little more alturistic than Cassius, but not much. Although he is sincerely upset by Caesar's murder he pragmatic and returns to his own interests pretty fast,

"But Lepidus, go you to Caesar's house;

Fetch the will hither, and we shall determine

How to cut off some charge in legacies."