How do I download this on my iPad nine

These support pages should get you started with setup of your iPad - and the methods of transferring your data from between devices:

Set up your iPhone, iPad or iPod touch – Apple Support

Transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch - Apple Support

Use Quick Start to transfer data to a new iPhone, iPad or iPod touch – Apple Support

If the donor iPad/iPhone, from which you are transferring your data precedes iOS12.4, QuickStart will not be available.

“Transfer” is rather a misnomer. In reality, your data and setup is merely cloned to the new device. Nothing is moved or removed from the original device.

An alternative is to restore either an iCloud or iTunes backup to the new device:

How to back up your iPhone, iPad and iPod touch – Apple Support

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

Apps are not directly transferred between devices. For Apps, the transfer process creates a record of the Apps that are installed on the donor/source device - and it is this record of installed Apps that is transferred to the target/destination device. For Apps that are still available for download from the App Store, the corresponding Apps are automatically downloaded and installed from the App Store.

Not all Apps will necessarily, continue to be available or compatible with the target. Apps may have been removed or retired from the App Store by the respective App Developer. Some Apps may have been abandoned - and/or may not be compatible with the target device. Where a compatible App is not available, you’ll not be able to transfer/install the App.

You should be able to update your iPad to iPadOS 17. But you might run into issues transferring from iPhone to iPad as they are different device types. You can instead sync files and stuff with iCloud. That wouldn’t move all apps and data though.

My iPad nine sound like a old television

I’ve been in the iPad all day and it sounds fine but one problem is today in the November 23 when I watched YouTube shorts I can’t fix it. I start to restart it.