Somewhat recently, Google has made the change that apps need to use a recent API level for people on newer Android versions to be able to see it in the Play Store. This means that many apps (mostly games, since they are often released once and then not updated) are no longer available, even though they would be compatible with my device if I could get an APK. However, I cannot find APKs for these apps online, because they are paid.
This article says "Users who have previously installed the app from Google Play will not be impacted and will still be able to discover, reinstall, and use the app on any Android OS version that your app supports." This implies that if I was able to buy the app, I would be able to install it even on my newer device. The problem is, I don't have an older device. I only have my phone, so when I try to purchase it from the Google Play website, it says "No eligible devices for app install". Is there a way to add a fake device with an older version of Android to my Google Play account so I can purchase these apps? I am running Linux so I don't know how to install an Android emulator for older versions of Android.