An initial first step might be to simply restart your home broadband router - as this often clears this issue...
Disconnect power from your router, wait 30 seconds, then restart. When your router has completed it’s reboot, force-force restart your iPad:
https://support.apple.com/en-gb/guide/ipad/ipad63d30b5a/ipados
If the combined restart of your Router and iPad do not help, then contacting Apple Support might be your next best step. You’ll find the link to Contact Support at top-right of this page.
Alternatively, you should take your iPad along to the Genius Bar at your local Apple Store - where the technicians will be delighted to help you.
I hope you find this information to be helpful in resolving the problem.