What causes gloomy days and despondence, according to the poem?

According to the poem “A Thing of Beauty,” “gloomy days” and “despondence” are caused by the burdens and hardships of life, such as suffering, grief, and sorrow. Keats suggests that these negative emotions arise from the struggles and challenges people face in the world. However, he also implies that beauty acts as a remedy to these feelings, offering a source of joy and peace that helps alleviate the gloom and despair caused by life’s difficulties. Beauty, in its various forms, provides a constant, uplifting presence that counters the darkness of human existence.

This question related to Poem 3 English Flamingo Class 12th NCERT.
From the Poem 3. A Thing of Beauty.
Give answer according to your understanding.