@Kieron OConnor , thank you for your question.
My understanding is that you need to host your APK files so customers can download the files and then sideload your app on their Android devices.
Azure does have options for file hosting. You could store your APK files in something like Azure Storage and then serve up a link to download the files on your site.
If you do not have a site, you could use something like Azure Web Apps.
And if you're not a web developer, you can use something like Azure Power Apps instead, which is a low-code approach to web development.