If you do not need a standalone MP3 file, most major streaming services allow you to download the track within their app for offline playback.
: Allows for the digital purchase of the track, which can then be downloaded for offline use on authorized devices. Old Town Road MP3 Download
: Offers the original song and various remixes, including the popular Billy Ray Cyrus remix , for individual purchase as MP3 files. If you do not need a standalone MP3
: Official versions provided by Columbia Records can be streamed and, with a subscription, downloaded within the app. Legal & Safety Considerations with a subscription