我并没有你们想象的坚强
[wŏ bìng méi yŏu nĭ men xiăng xiàng de jiān qiáng]
Translated as 'I'm not as strong as you think.' The individual might be projecting a tough image but is admitting that on the inside, they might not possess that strength, indicating an underlying vulnerability or sensitivity they may have been trying to mask.