Your child is not badly behaved. They are missing a specific capacity that can be built before the next game.

Ages 7–9 | The window between 7 and 9 is when emotional regulation patterns begin to solidify. Here is what is forming and what you build now.
Ages 3–12
For the decided parent. Ages 3–12. The school teaches. The enrichment slot practises. Only the home builds what nothing else can reach.
For parents building this capacity in children aged 3 to 12. The child who reaches inside for the answer is built at home.
the 5 minute practice
The research behind why short, consistent parent-child interactions build stronger minds than hour-long enrichment sessions.
For parents of children aged 7–9. Because "I can't do it" said before any attempt is a signal, not a verdict.
For parents of children aged 5–9. Because what happens at the homework table every evening is about something larger than the task.
For parents of children aged 5–7. Because school teaches many things. What it quietly trains out is worth noticing.
emotional regulation
For parents of 7, 8, and 9-year-olds. This is the most important thing you'll read about this period of your child's life.
For parents of children aged 7–12. Because the question is not whether they will use it. The question is what they will use it with.
For parents of children aged 3–9. Because the habit forming right now will shape everything that comes after.
For parents of children aged 5–9. One moment. One practice. Doable tonight.
For parents of children aged 3–7. Because boredom is not a problem your child needs you to solve. It is the first invitation to build.
critical thinking
For parents of children aged 7–12. Because the protection your child needs isn't a filter or a ban. It's something you can build.