iPad restore without a mac?

Your iPad must be restored:

If you see the Restore screen on your iPhone, iPad, or iPod touch - Apple Support

These support pages outline the available methods to restore an iPad - either from a backup, or to Factory Settings:

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

Restore your iPhone, iPad or iPod to factory settings – Apple Support

Restore all content to iPad from a backup - Apple Support

You’ll need access to either a PC (with iTunes installed) or a Mac (with iTunes or Finder - as appropriate for the installed version of MacOS).

Download and use iTunes for Windows – Apple Support

Update to the latest version of iTunes – Apple Support

Use of a PC or Mac computer is unavoidable. If you don’t have access to a suitable computer of your own, that of a helpful friend or family member will suffice. Alternatively, the technicians at the Genius Bar of your local Apple Store or Apple Authorised Service Provider (AASP) will be delighted to assist.

Not sure which iPad you have? Identify your iPad model.

you don't need a mac a windows computer will do too

connect it to a computer with the cable and read

If you forgot the

passcode on your iPad, or your iPad is disabled - Apple Support

if you do

not own a computer then you need to use the computer of a

friend/relative/public library or computer store

Your iPad, depending upon model, will have either a Lightning or USB-C port. You simply require the correct cable that matches your computer’s USB connector to your iPad. Possible permutations are:

• USB-C (computer) to USB-C (iPad)

https://store.apple.com/uk/xc/product/MM093ZM/A

• USB Type-A (computer) to USB-C (iPad)

https://store.apple.com/uk/xc/product/HN892ZM/A

• USB-C (computer) to Lightning (iPad)

https://store.apple.com/uk/xc/product/MM0A3ZM/A

• USB Type-A (computer) to Lightning (iPad)

https://store.apple.com/uk/xc/product/MXLY2ZM/A

Be aware that plug-adapters commonly marketed to connect a USB-C plug to a older style USB port should be avoided. The USB-C specification does not allow the use of “plug adapters”; with USB-C, you should only use an appropriate certified cable, as doing so will protect your relatively expensive USB-C device (in this case, your iPad) from potentially damaging wiring combinations. Certified USB-C cables incorporate protective circuitry that is otherwise absent from plug-adapters.

if the computer do not have an usb-c port then you can purchase a cable with an usb-a connector or use the cable of an older

ios device that have an usb-a port

Lightning to USB Cable (1 m) - Apple

or purchase a converter

https://www.amazon.com/usb-a-usb-c-adapter/s?k=usb-a+to+usb-c+adapter