Why day day full your phone memory storage? But, you didn't find cause.

Maybe,
- you use many app.
- you browse many website in your browser

For example - my phone storage is 128 gb , I installed many app and also browse more and more. I realize where goes my Internal storage 🤣

So, I think you know about cache.

Clean the Cache on app.
And, web browser like chrome different -

On chrome clean some big data that no need to you

Go Setting -> Site setting -> Data stored -> click search 🔍 icon then showing most use Data stored site list . You want to clear data on sites click data clean.

It's may help you when you need more empty Internal storage.