Mobile devices by ANY manufacturer get supported for a much shorter time than a full featured computer.
To stay relevant, cutting edge, up to date and to compete in the mobile device space, makers, like Apple, cannot afford to support their mobile devices for 10, 15, 20 years!
This is never going to happen.
Apple supports its devices for between 4-6 years with third app developers continuing to support these older devices for another 2-3 years!
Apple supports their mobile devices longer than any other mobile device maker in the marketplace.
The iPad 2 has reached that limit.
2019 is the year many third party app developers have decided to abandon older iOS devices and older iOS versions of their apps.
Besides, the technology in that iPad is nearly 9-years old and the newer iOS versions would never run well on such an old device.
You'd be signing up here to moan and groan and whine and complain about how turtle slow your iPad 2 is running IF it could run iOS 10 or later.
Besides and as a matter of fact,
Apple is NOT responsible for what third party app developers decide what iOS devices and what iOS versions these app developers decide to support, or not.
Your “beef” is with the third party app developers and NOT with Apple.
If third party app developers want to drop support for older iDevices and older iOS versions, that is their decision and right/perogative to do so.
Apple does not control any software developers/companies and does not control the software they develop and what they choose to do with it!
If you own a computer that you can install iTunes on, you might/maybe able to take advantage of my procedures in this link below.
Older versions of some apps may still exist in the iOS App Store, despite the fact the apps may have moved on to an higher
minimum iOS version, now.
If you need older versions of apps that have moved on to iOS 10 and later, tap on my link below and choose the
method that best works with your current situation.
CAREFULLY read and follow ALL directions. Especially so for my computer/older iTunes procedures.
Any of my procedures/solutions work!
Downloading Older iOS 9.3.5 Versions of A… - Apple Community
A HUGE Disclaimer.
Apps may or may not have older iOS 9.3.5 versions still available from within the iOS App Store.
The availability of older apps for older iOS devices and versions is SOLELY up to the decision/discretion of the app
developer and NOT by Apple!
There is no way to know what older version apps,if any, app developers have left on Apple's iOS App Store servers.
There are ONLY a couple of ways to try/attempt to get an older version of an app.
Pick the method that works best for your situation/circumstances.
Also, I would STOP using that over 3-year old Safari Web browser, as it is, probably, not safe and secure to use any longer, and seek out a third party web browser that is STILL currently being updated and STILL being supported on iOS 9.3.5.
Heed my advice on this issue in my above link.
Good Luck!