This is not a famous story or an ancient poem. This poem is to comfort and comfort a lovelorn friend. The writing is not very good, but the meaning expression is basically in place. The general meaning is to ask the other party not to drown their sorrows in wine, and to speak out if they are depressed. Don't worry about finding a lover, there are plenty of good girls.
But the word "fallen petal" is not well used and its meaning is distorted. Who wants to be friends with fallen petal? . It would be much better to borrow the allusion of "the grass in the sea is flourishing" and replace it with the word "the grass".