You purchased an almost 10-year old iPad.
If you want to attempt to use this iPad, instead of simply returning it, geting your money back and purchasing a new or much, MUCH newer, used iPad Model.
To start, I would NOT use that over 4-year old default iOS Safari Web browser is too old, not secure and not safe to use to access the Internet, any longer.
There are virtually NO MORE third party Web browsers left for 8-10 year old iPads!
Available and more popular third party Web browser choices are pretty much GONE, now.
If you must use these old iPad models, here is what is left for still updated Web browsers in the iOS App Store.
Pickins’ are slim, now!
ALook Web browser ( A fairly new Web browser primarily designed for old iOS device versions, but is still available to newer iOS/iPadOS devices, as well )
Dolphin Web browser
Maxthon Web browser
TOR private browser
TOR + VPN private browser
Turbo VPN private browser
This is pretty much it for iOS 9/10 compatible, third party Web browsers today.
For YouTube, you would need to use that newer Web browser to access the actual YouTube Website, instead.
The YouTube app is just portal for the actual YouTube Website, anyways.
The same maybe applicable to FaceBook.
Netflix has compatible apps that go all the way back to iOS 5.1.1.
There is one last thing you can try/attempt, if you need an older version of an app for that 10-year old iPad.
If you own much newer iOS device that can run either iOS 12 and.or iOS/iPadOS 13 and later, you can install the most recent app/s onto that more recent iOS device.
Then go back to your older iPad, open the iOS App Store, go to the Purchases section of the store app, search for the app/s you wish to try and download to that older iPad and see if an older version of the app is allowed to be downloaded/installed to that older iPad.
These newer iOS/iPadOS devices must use your same Apple ID user account and password.
Failing that OR IF NO joy, then there is nothing more to be done.
Apple ended support for all 8-10-year old iOS devices well over 4 years, ago, in 2016.
Third party app developers abandoned and stopped supporting these 8-10-year old iOS devices nearly 3 years, ago, in 2018.
There are, virtually, NO MORE third party apps available from the iOS App Store, any longer!
None!
This is an old and obsolete iPad.
It's 2021 now!
If you need/want an iPad with an up to date iPadOS with access to current, updated apps, then you really need to seriously consider a purchase of a new iPad model OR a much, MUCH “newer” and less expensive, used iPad models, from better known, trusted Apple product/device retailers/resellers, locally or online, capable of running the latest iPadOS versions.
There are plenty of newer, older iPad models that can run the latest, current versions of iPadOS.
Sorry & Best of Luck to You!
