Among Us on 9.3.5 ios iPad

No.

Among Us needs an iPad that can run iOS 10 or later.

Your iOS 9 iPad is stuck forever at iOS 9.3.5.

Your iPad model is too old, now.

Sorry.

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 new iPad model OR a much, MUCH “newer” and less expensive, used iPad models, from better known, trusted Apple product/device retailers/resellers, 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!

I have never tried using Among Us but I have found that sometimes even if an app developer lets you download an app under a really old version of iOS, in reality it won't work. I think even Apple is guilty of this. I recall downloading the Find My app on iOS12 and when I opened it, it would tell me I needed iOS13 or higher.