who am I?

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Across
  1. 3. l am clever
  2. 6. I always try my best
  3. 7. I won a 2018 to 2019 premier in this sport
  4. 8. I like jokes
Down
  1. 1. I can control heaps of energy
  2. 2. they lost the 2018 grand final in the AFL and they are my fave footy team
  3. 4. I like to make things
  4. 5. I assist people in the classroom