"fragile confidence" is a correct and usable phrase in written English.
You can use it to describe a person's lack of assurance, especially in times of difficulty or uncertainty. For example, "The pandemic has led to fragile confidence in the stock market, driving investors away from riskier assets."
Wenger made the difficult decision to withdraw Eboué, even though it risked shattering his fragile confidence.
Hoggard had been fortunate but his often fragile confidence is on a high at present.
The enormity of the result for the team's fragile confidence could not be understated.
For the Chinese, it shattered a fragile confidence in Tibetan loyalty.
If these cuts do not happen, fragile confidence may leak away again.
But the fragile confidence of a kicker can dissolve over the slightest change in routine.
In this case it shattered the Israeli peace camp, it blew apart all the fragile confidence-building measures that took years to build, and it generally left the Israeli public feeling it had opened the gates to a Trojan horse.
As the baby brother whom Veronica has always adored and protected — especially against their petulant mother, Lal, whose memory he cherishes — Anthony threatens to undermine not just the couple's conjugal equanimity but Kitty's fragile self-confidence.
And if you really want to stop a show properly, few songs will get the job done better than "Beautiful," which winningly conflates the sturdy self-regard of a pop star with the fragile self-confidence of an outcast.
In covering familiar ground thoroughly ploughed by Susan Faludi, Carole Gilligan, Susie Orbach and Natasha Walter, she does identify some of the pressures on young western women, such as perfectionism, pornography, work-life balance and fragile self-confidence.
His early courtroom appearances, when they came, were frequently difficult, sapping his fragile self-confidence.
