Download Netflix

You could try this.

Older versions of 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 should still currently work!

https://discussions.apple.com/docs/DOC-13282

A Disclaimer.

Apps may or may not have older iOS 9.3.5 versions stilcurrent] available from within the iOS App Store.

The Netflix app has older versions, in the iOS App Store, that go all the way back to iOS 5.1.1 and are still supported by Netflix.

However, getting these older versions, now maybe problematic.

There are a couole 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 nearly 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.

Best of Luck to You!

You cannot. Netflix no longer supports iOS 9 devices.