Organize Card

Hi, I’m learning HA,
I made a card with “picture-elements” where there are many functions (too many) and I still have to add a lot; I would like to know if there is a way to create “files.yaml” to divide the instructions of the card, to organize them better… I tried to study the “!include” function but I didn’t find clear information… how can I do it?
Is there a better way to better organize a lot of information in one Card?
thank you