It is impossible to configure recent ipads in any other way. There are no established 3rd party OSes that you can install, even with great effort. IOS does not

It is impossible to configure recent ipads in any other way. There are no established 3rd party OSes that you can install, even with great effort. IOS does not respect user freedom. As an example, see the restrictions on running code that Apple didn't approve of (directly, or, in the EU, indirectly).