Goosebumps - Deep Trouble

In my book Goosebumps - Deep Trouble by R.L. Stine, I seem to see that the main character of the book has both Internal and External conflicts because one example from the book is when he says "Yes, William Deep Jr., famous twelve-year-old underwater sea diver", this show that he makes it up and from the inside he must like but I don't thinks others do.The external conflict from him is when his sister or as he thinks his "Partner" starts to mess with him and pushes him around and makes fun of him and hurts him a little too.The internal conflict that shows Person Vs. Self because he does all this and when his sister and his grandfather don't believe him when he gets attacked he starts to think like he just doesn't need be famous diver William Deep Jr. and he doesn't want to have anymore adventures.The external conflicts it shows Person Vs. Person because he always fights with his sister and they never seem to get along or stop and calm down their argument it just keeps going and going till' things get worse.The story it shows a lot of conflict like Kidnappers stealing the mermaid and fighting from when William seen the weird thing in the ocean that all shows that conflict happens almost everyday for the family.