So, do you know what 'former' means? It's like when you used to be something. For example, if you used to be a baby and now you're a big kid, you are the former baby.
The word 'former' can be used to describe lots of different things. It's like a way of talking about something that used to be a certain way, but isn't anymore.
Let's say you had a toy that you used to love playing with, but now you don't play with it anymore. You could say "this is my former favorite toy."
Or, if your mom used to work at a job but doesn't work there anymore, you could say "my mom is the former employee of that place."
So, the word 'former' is just a way to talk about how things used to be in the past. It's like a way of telling a story about something that's changing or has changed over time.