How to factory reset iPad without computer
How to factory reset iPad without a computer?
iPad Pro (3rd generation)
Question marked as
You don't need a computer to Factory Reset your iPad and it can be done by following these steps, although you will need your Passcode/Password.
How to factory reset your iPhone, iPad, or iPod touch - Apple Support
If you have forgot your Passcode you may be able to reset it if you have the Security Lockout screen in this support article and you know your Apple ID and Password.
If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support
If those are not options for you, then a computer will be required. You can use a friends computer or take your device to an Apple Store and they will assist you there. This will allow you to reset the passcode, but it will still be locked to the Apple ID that is signed into the device. You will need the Apple ID Password to remove it.