Can lyric poetry be about anything?

Yes, lyric poetry can be about anything. Lyric poetry is a genre of poetry that expresses personal feelings or emotions, and it is not restricted to any particular subject matter. Lyric poems can be about love, loss, nature, spirituality, or any other topic that the poet finds meaningful. They can be written in any style or form, and they can use any language or imagery that the poet chooses. The only requirement for a lyric poem is that it expresses the poet's personal feelings or emotions in a way that is evocative and moving.