How do I play games on iPads 9th generation
How do you get to play games or quiz on iPads
iPad, iPadOS 15
What types of games?
Web browser based, online ( Internet/Web ) games?
There. are game apps in the iOS/iPadOS App Store app.
Search the iOS/iPadOS for types of games you are interested in and see what appears in the search list for applicable apps that may meet the types of iOS/iPadOS games you are looking for.
Be advised, many games maybe, initially free, but may require some sort of “in-app” purchase.
When you set your iPad up, did you set up a vaild form of payment to be able to use all the various online Apple Stores available to your iPad?
You may not be able to download/install anything from any of Apple's stores without a valid form of store payment.
Good Luck to You!