He has no self-confidence.

他毫无自信。

《牛津词典》

"When you realize your value to others, confidence is no longer about self-promotion, " she explains.

当你明白意识到自己对他人的价值，自信就不再是自我推销。

youdao

No trust in Decisions Made: Even if you finally do make a choice, it is very possible that because of your low self-confidence, you have no trust that your decision was the best for the circumstance.

对你所做的决策持怀疑态度。即使你最终作出了一个决定，但十分有可能因为你缺乏自信，你不相信你做出对现有情况最有利的决定。

youdao

And I was just so overcome by emotion because at that point of time, you know, after 17 films, you have no self confidence left.

CNN: Interview with Abhishek Bachchan

There is no shortage of self-confidence in this young man.

CNN: Commentary: Obama a one-term president?

Trained mothers displayed greater self-confidence than mothers who had received no MOCEP training and reported that patterns of interaction with their husbands had changed.

UNESCO: Family Literacy Programmes (FLPs)