、。
She tried to tell a joke, but it didn't go well.
Literal
She [topic-は] joke [object-を] say-try-to effort-did [but-が], well didn't-go.
Two grammar points layer here. ~おうと努力した ('made an effort to') uses the volitional + と + 努力する for deliberate, effortful trying. うまくいかなかった ('didn't go well') is the negative past of うまくいく ('to go smoothly'). The contrastive が connects the attempt with the failed result.