What is the conflict or problem of Dogs Dont Tell Jokes?

In "Dogs Don't Tell Jokes" by Louis Sachar, the primary conflict revolves around the protagonist, Dave, who struggles with his identity and self-acceptance as an aspiring comedian in a world where he feels misunderstood. He faces challenges at school, particularly from peers who bully him and a teacher who discourages his humor. Additionally, his relationship with his family, especially his older sister, adds another layer of tension as they navigate their own issues. Ultimately, the story explores themes of perseverance, friendship, and finding one's voice amidst adversity.