Sentences with To No Avail

She spent hours searching for her misplaced keys, but it was to no avail, and she had to use the spare set.

Johnny tried to convince his friends to change their plans, but his persuasion attempts were to no avail.

Sarah tried to fix her broken watch on her own, but her tinkering was to no avail.

The teacher tried different teaching methods to help the struggling student, but it was to no avail, and extra tutoring was required.

The explorer navigated through the dense jungle, yet the search for the hidden treasure was to no avail.