Here is a quick resource for your study in Lamentations. The historical situation of this short book is the same as Jeremiah. Lamentations represents the collective voice of suffering and sorrow for the Israelites who are experiencing the Exile (another people destroying their land and carrying most of the Israelites away from Judea). Like Jeremiah, most of Lamentations has a depressed tone to it, a sober description of their present reality.
Like Jeremiah, hidden among these laments are verses of incredible hope. Consider Lamentations 3:22-24- “The steadfast love of the Lord never ceases, his mercies never come to an end; they are new every morning; great is your faithfulness. ‘The Lord is my portion’ says my soul, ‘therefore I will hope in him.'” It means more to me knowing that these are words from a person in a terrible circumstance, who has clearly in tune with the reality of his present situation.
Here is a video from our friends at the Bible Project to help with your reading: