What reason does antinous give the suitors for their failure?

Antinous argues that the suitors' failure to win over Penelope is due to their lack of respect and proper conduct toward her. He suggests that their behavior has driven her away rather than winning her favor. Additionally, he points out that they have underestimated Odysseus's influence and the possibility of his return, which has led to their downfall. This reflects the broader themes of respect and honor in relationships within the narrative.