I need to erase completely my iPad pro. It is currently frozen

If iPad isn’t responding, do one of the following:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On other iPad models: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

If iPad still doesn’t turn on, or if it gets stuck during start up, see the Apple Support article If your iPhone, iPad, or iPod touch won’t turn on or is frozen.

If you intend to fully reset the iPad, you can follow this process; be aware that you’ll need your AppleID and associated password:

What to do before you sell, give away or trade in your iPhone, iPad or iPod touch – Apple Support

If you are using "find my phone" you can go to iCloud.com and erase it. I suggest going here as well - If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support