How do you say 'I'm lost' in Chinese (Mandarin)?
I would like to say 'I'm lost' in an abstract way. For example, someone feeling lost emotionally - in a sort of depressed or melancholy way - not physically/actually lost. Thank you if anyone offers any help.

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我感觉迷茫。（I feel lost)

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我很沮丧 or 我感觉很糟糕 or 我心里好难受

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感到失落、惘然若失、不知所措

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我走神了(I'm lost (acccidently didn't listen to you so careful))/我没弄懂(I don't understand )/我很迷茫（I'm lost(maybe is the method to do a thing)）