Hey, @adriano Raposo!
I'm sorry to hear that you found difficulties in your journey, but every Quest Saga is part of a whole challenge, which is completing your Dragon Ball Pack and summoning Shen Long.
When it comes to the part that you are, there's a secret button on the wall, before reaching the spins path. Pressing that button will open a hidden wall to the right side, which will lead you to a place with Eletric Eels, avoiding also the trap path.
When it comes to a Saga Tutorial, there's one made by a player for his Fansite right here: https://www.saiyanspolska.pl/pt/saga-portuguese/
Kindest Regards,
John.