How does Ralph change from the beginning to the end of the novel?

At the beginning of the novel, Ralph has hope and is encouraged that the group of boys will be able to survive and possibly be rescued. Ralph accepts the position as the group's leader and attempts to create rules and prioritize necessary tasks such as maintaining the signal fire, building shelters, and collecting water. As the novel progresses, Ralph begins to lose control and Jack usurps power. Many of the boys decide to join Jack's tribe and descend into savagery. Ralph struggles to regain his confidence and challenge Jack's tyrannical leadership. When Ralph is unable to regain favor with the boys and realizes that Jack's goal is to kill him, Ralph fights to survive. By the end of the novel, Ralph runs for his life as Jack and his tribe of savages hunt him through the forest. Fortunately, Ralph is saved when he runs into a Naval officer who is standing on the beach. At the end of the novel, Ralph loses all hope in humanity and cries for his friends who have lost their life.