FM Radio is the best method to discover music, especially for getting out of your bubble.

I've discovered and learned about lots of interesting musicians listening to the radio station of my university

Independent, community-supported local (to me) FM radio station (and streaming): https://threedradio.com/

They've given me some absolute gold.

I've found internet radio interesting, there's a ton of variety out there that you might not get on a local/national broadcast. Even within a genre, a lot of stations may routinely play the hits but introduce you to different 'sets' of other musicians. More generally on topic, I'd wonder about the approaches different stations and djs use to build their playlists.

Specifically independent and public music radio. Commercial FM / Clearchannel is trash in my opinion.