Sometimes overusing a specific phrase might seem basic. So we can use some alternatives instead.

Alternatives for "confused!"

According to the Oxford dictionary:
unable to understand something or the reason for something

e.g. She had a puzzled look on her face.

According to the Oxford dictionary:
Confused and anxious because you are unable to understand something

e.g. She looked perplexed.

According to the Oxford dictionary:
confused

e.g. He gets muddled when the teacher starts shouting.

According to the Oxford dictionary:
to confuse somebody completely; to be too difficult or strange for somebody to understand or explain

e.g. I'm baffled why she hasn't called.