Because Libra people, in fact, when dealing with some things, are not willing to completely expose themselves to others, or find someone they think is close to tell them, or show them in other ways, then they are likely to hide alone and vent their inner dissatisfaction or resentment in a way. Personally, I think that the people who sign the contract are all fragile inside, but they are unwilling to bring this fragile mood to others when they are hurt. They are very kind and don't want others to be overly anxious because of their own affairs.
In addition, in fact, I personally think that when you are sad in the constellation 12, you may bury yourself in drinking, or it may be done by my sister, because Capricorn people are actually indifferent on the surface. When they encounter something, they may not go to their friends to tell them or do something. They may hide, get drunk silently, drink some wine to sober themselves up, and can. At that time, I personally thought that Capricorn people were actually cold inside. They don't want to share their troubles with others. It is very understandable that they do such things when they are sad.
In fact, I personally think that those lonely people, those who are lonely inside, may prefer to hide and drink alone when they encounter sad things, so that they can indulge themselves and not think about those problems.