What folder structure do use for your flutter projects?

Hello community. 👋
I've been learning and building flutter applications lately (newbie) and was wondering if there is a predefined way to structure files in the lib folder.
How do you decide the structure you use? 🤔
What do you always try to avoid when using a structure?
Or if you don't use a structure at all 😁

✌ share your thoughts and workflow in the comments below