Imagine you have a toy car. You can play with it by yourself and you don't need anyone else to help you. It's like the toy car is doing something all by itself without any other help - this is just like an intransitive verb!
An intransitive verb is a word that shows what the subject of a sentence is doing all by itself, without needing an object to receive the action. These verbs don't need anything or anyone else to complete the action - they're independent! For example, "I ran" is an intransitive verb. I didn't run anything or anyone, I just ran by myself.
In contrast, transitive verbs need something or someone to receive the action in order to make sense. For example, "I kicked the ball" - the verb "kicked" needs an object (the ball) to make sense.
So basically, intransitive verbs are like independent and don't need any help, while transitive verbs need something to make sense!