There are various phrases that one can use instead of "in need of help." Some synonyms include "requiring assistance," "in dire straits," "needing support," "seeking aid," "dependent on others," "desperate for help," and "calling for assistance." Additionally, you can use "in a tight spot," "at a loss," and "in a predicament." These synonyms convey a sense of urgency and address the need for immediate assistance. It is, therefore, essential to choose the appropriate word or phrase depending on the context of the situation and the level of desperation for help. Regardless of the words used, the message is clear that the person seeks help and support.