Yes, it means someone feels very sad suddenly.
Lack, want, need, require as verbs all stress the absence of something desirable, important, or necessary. Lack means to be without or to have less than a desirable quantity of something: to lack courage, sufficient money, enough
I felt nervous because it was my first time online and its a new experience
He is basically powerless and has no such power to save himself from thee.
Romanticism was characterized by its emphasis on emotion and individualism as well as glorification of all the past and nature, preferring the medieval rather than the classical.
