Okay kiddo, let me explain what is meant by "collateral freedom". Imagine you have a toy that you love very much, and you get it taken away by your parents because you did something wrong. If you really want that toy back, you might offer something else as a promise to your parents that you will behave. That thing you offer is called "collateral".
Now, let's imagine that some people living in a country want to access a website that the government in that country has blocked. They can try to go to that website through a different country where it is not blocked. This is called "collateral freedom". In this case, the different country offers a promise to help these people access the blocked website.
Collateral freedom means that even if a website is blocked in one place, people can still access it through a different country. It's like offering a toy as a promise to get something you want back. But, unlike the toy example, collateral freedom is not always a good thing. Sometimes people use it to access illegal or harmful websites. It's important to use the internet safely and responsibly.