With YouTube Music now Google's primary streaming service, the Google Play Artist Hub is going to shut down at the end of April. Sadly, Google has no plans to offer a new direct portal for smaller artists, and all material that was uploaded through the Google Play Artist Hub will disappear from both the Google Play Store and Play Music.
https://www.notebookcheck.net/Another-one-bites-the-dust-Google-Play-Artist-Hub-to-shut-down-by-the-end-of-the-month.415946.0.html