What is the reason for the unexplained urge to cry and depression?

It is possible to feel the urge to cry and be depressed when life is not going well, when you are lonely or sad, which is a normal emotional response to negative life events.
If you want to cry, cry out, don’t hold back, try to vent your emotions, find a friend to talk to or exercise more, eat sweets, change your surroundings and change your mood. With proper self-regulation, you will soon be able to relieve yourself.