According to the Buddha what happens when someone understands the true nature of suffering

In Buddhism the symbol of suffering is something more concrete than we Westerners have. It refers not so much to physical or moral pain, but to the feeling of "dissatisfaction" that accompanies most people almost 100% of the time.

The four noble truths dictate the following:

First truth

Life is full of suffering.

Second truth

Suffering is a consequence of affection. Since we cling to goals, things and people, we suffer when we make them unusable, but in reality everything is momentary.

Third truth

The stoppage of suffering is possible through detachment. It is necessary to renounce greed.

Fourth truth

The road to self-improvement is the eightfold path, a method that consists of moderating hedonistic gratification with ascetic self-denial; that is, choosing the right path and having the luminous wisdom as its purpose