What did Esau try to do after seeing that Canaanite women displeased Isaac?
After seeing that his Canaanite wives displeased Isaac, Esau tried to remedy the matter by taking another wife from Ishmael's line—Mehalath, daughter of Ishmael and sister of Nebajoth. The text calls this an attempt to make two wrongs a right, which does not work.
Les explains that Esau saw Jacob obeyed Isaac and was sent away to Paddan Aram with the charge not to marry Canaanite women. When Esau realized the daughters of Canaan did not please Isaac, he tried to do two wrongs to make a right. It was already bad enough that he had married Canaanite women, but he went further and married into Ishmael's family, taking Mehalath, daughter of Ishmael, Abraham's son, sister of Nebajoth, as his wife. Les notes this attempt did not work, and the narrative then moves to Jacob leaving Beersheba toward Haran.
And Esau seeing that the daughters of Canaan pleased not Isaac his father;