Increasingly lacking confidence about myself, I am nervous of the coming exam.

我对自己越发没自信，因而对即将到来的考试也感到非常焦虑。

youdao

Lacking confidence in marriage. HILDA becomes pregnant just for a baby.

为为自己留点血脉，对婚姻没有信心她当上不婚妈妈。

youdao

The people who fear to give public speech may because of lacking confidence, afraid to stand in front of so many people or just other reasons.

害怕公共演讲的人可能是因为缺乏自信，害怕站在那么多人面前或是其他别的原因。

youdao

The Youth Sport Trust said schools needed to do more to address issues such as girls feeling body conscious or lacking confidence in their abilities.

BBC: Health

But he said he became suspicious of Mr Wilkinson, who he described as "desperately disorganised" and "lacking confidence", and on one of his visits secretly took a photograph of him.

BBC: Guns 'bought for James Bond film'

Survivors are often too afraid or embarrassed to speak out on what they have been through, sometimes isolated from their communities and lacking confidence those who abused them will face justice.

CNN: War's most vulnerable: How to stop child rape