Probably the old Apks are being blocked on the Android update cycle of versions. There is a way of sideloading old Apks via the developers menu and plugging in your device (Android phone) into your PC / laptop and installing it that way. I did that with some very old apps on Irish birds and Butterfly identification@Tell - quick question - is there any way to fool the MIB2 to "mirror" what they say are "unauthorised" apps on your phone in Android Auto? Mirror link no longer supported on the Galaxy phones (mines an S9+), and the app isn't approved to show from Android Auto, but would really like to display VAG DPF app on-screen if at all possible. Failing that, do you know of any way to fool the phone into accepting MirrorLink, as it will not install any MirrorLink apk I download, even the Samsung Mirror Link version. Thanks.

I'll look the commands up and edit in later. Its ADB plus a specific command put in for the purpose which skips the block. This would be usefull where you have the old modified app, think it was Android Auto which people had that supported Mirrorlink. It is Samsung Galaxy fablets I use. Worth a try if you have something that worked but can't install on a newer version of Android.
It's this one:
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Run the following command in your terminal/command line window:
adb install --bypass-low-target-sdk-block FILENAME.apk
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How to install old apps on Android 14 - Liliputing
How to install old apps on Android 14

From XDA forum. I guess it works for Android 15 as well. It's a more slick way than editting the manifest.
However if it's an older model than Android 14 you might have to edit the manifest. That fools it to think its a new app. That bypass command came in later to be helpfull to developers.
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