Storage space on Huawei handy?

I have a Huawei phone with 10 GB of internal memory.

Although I delete all incoming WhatsApp images and videos immediately after watching, my free space is less and less and is currently only 40 MB.

My saved old photos, of which I have already successively deleted a lot, amount to 500 MB. I deleted all apps except WhatsApp and Chrome.

How is it possible that the free space nevertheless shrinks constantly?

I regularly clean the junk with Avast and the phone manager.

Maybe it's the chat history, because they do not consume so much memory. It may also be the audio or the pictures you send or the WhatsApp backups if you have this feature enabled. ʕ • ᴥ • ʔ

Thank you for your answer!

Now I have won 180 MB in deleting the longest chat history.

I do not download any audios.

I did not activate backups.

There must be other reasons…

I've found it!

It was the email program! Unlike the PC, every single email is downloaded to the internal memory of the phone. And there I just had too many, I had to clear a swing…