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"at a loss" is a correct and usable phrase in written English. It is often used to describe feeling confused or unsure about something. For example, "He was at a loss for words trying to explain his actions.".
"I'm at a loss".
I was at a loss.
I'm totally at a loss.
I'm utterly at a loss.
He felt at a loss.
"We were at a loss".
Second, the experts are at a loss.
Thanks to Ludwig my first paper got accepted! The editor wrote me that my manuscript was well-written
Listya Utami K.
PhD Student in Biology, Bandung Institute of Technology, Indonesia