Downloading older app versions
I own an older iPhone (4) that cannot update past iOS 7.1.2.
This has worked fine for me. I cannot install the latest versions of most apps, but I could still use older versions of apps on it. To install older versions of apps, I would use my desktop computer (running Windows) to open iTunes and find the apps I want in the App Store. I then added them to my list of "Purchased" apps, and then I could then login to the App Store on my iPhone and download them from there. It would then offer me a download for the latest compatible version of the app (as long as it was downloaded from my "Purchased" list).
This all changed recently. iTunes has been overhauled so that it no longer allows you to browse for apps, and I no longer have a way to add apps to my list of "Purchased" apps. Every app I try to download on the App Store that isn't on my "Purchased" apps list will not offer a download for the latest compatible version of the app. It simply gives an error (as shown in attached screenshot) saying I must update to a later version of iOS.
In summary, iTunes removing functionality for apps seems to have left anyone owning an older iOS device without the ability to download legacy versions of any iOS apps.
The only solution that I can think of would be to login to the App Store on a newer iOS 11 device and add apps to my "Purchased" apps list, but that would likely require me buying a whole new device (something I cannot afford). That's not really a real fix, as then there would be no reason for me to use my iPhone 4.
Does anyone know of another workaround for getting older versions of iOS apps?
iPhone 4, iOS 7.1.2