Why the new update is keeping failed all the time can’t be completed at all! Why this keep happing? Is something wrong?

Hello hessah79,

We see that you need help to update your iPhone.

For this issue we recommend that you follow the steps here: If your iPhone, iPad or iPod touch won’t update

If you’re unable to update wirelessly you can also use a computer. Update your iPhone, iPad, or iPod touch. "If you can't see the update on your device, you can update manually using your computer. Learn how to update your device manually if you're using a Mac with macOS Catalina or later, or if you're using a Mac with macOS Mojave or earlier or a Windows PC."

Be sure to create a backup before updating. How to back up your iPhone, iPad, and iPod touch

Cheers!

Do you have a VPN installed on your phone? Turn it off if you do.