Everytime I do the ios 16.7 it starts downloading but when its almost done it tells me that there was an error.

Hey there izabella139,

To help with resolving update related issues, follow along with the steps below:

Try updating your device again using the same network. If you still see one of these messages, try updating your device using another network or update your device with your computer:

* Update your device using a Mac with macOS Catalina or later

* Update your device using a Mac with macOS Mojave or earlier, or a Windows PC

If the issue happens again after trying to update with multiple networks, remove the update.

For additional help, continue here: If your iPhone or iPad won't update - Apple Support

Take care!