who is at fault for the tragic things that happened in oedipus rex?

Oedipus had become the king of Thebes by answering the riddle of the Sphinx.His success in becoming king of Thebes and his downfall in discovering his own origins are the result of the same character trait. In the play, king Oedipus is good in everything . He is so intelligent and potential that he solved the problem of Sphinx and shaved Thebans from the riddle. Likewise he is equally concerned and conscious about the problem of pestilence . But , finally his attempt to serve the citizen brought his own tragic fall to extent that therefore, the audience can should fell pity for the downfall of hero. However ,the hero has a flaw that causes the hero to fail. Therefore, the audience fells an appropriate moral fear that badness leads to bad results. The audience may feel both pity and fear , and neither of them will be corrupting. On the contrary , the emotions will help people sympathize with hroes better than themselves while fearing the negative consequences of wickedness.