I dreamed of putting a fishing rod into the water to fish. There was really a big red fish: fish has many explanations in my dream, which generally symbolizes wealth (because wealth is homophonic), opportunity (homophonic), the opposite sex, the object I want to associate with, and love (because of the joy of fish and water). From a psychological point of view, fish also represents repressed feelings. Red generally symbolizes enthusiasm, strong love and tenacious vitality. Big fish generally represents big gains (such as good opportunities).
You pull hard, the fishing line breaks and the fish runs away, which means the right job, ideal object, opportunity and so on. What you originally found has "run away", missed it and can't stay. The reason is that you push too hard. This dream emphasizes the golden mean, don't be impatient, let the harvest that originally belonged to you stay. Good luck!