I'd like to purchase several mp3s to download to my Android phone on the iTunes Store on my Mac (due to the fact that I don't want to buy entire CDs for a single track or use an online service for them). However, I don't have the Apple Music app on my Android, and would like to be able to use the purchased mp3s on my phone nonetheless. Is it possible to download and copy the mp3 files of purchased songs from the iTunes Store?
Yes, you can export the purchased song (AAC format) to mp3 and then transfer to your android device. Please follow this guide: https://support.apple.com/en-gb/HT204310