IDK; I was an indiehead basically forever, and i mean that in the truest sense of the word: not a specific style but music that is independent of big industry, big algorithm, big platform.
This used to involve reading that one indie magazine, listening to late night radio shows & going to gigs in small venues.
Now it's still about listening to certain niche (internet) radio stations, going on Bandcamp, or checking out what other fediversists recommend.
Still going to local gigs.
Keeping your ears open.
My point? There's plenty great current music in my life, and the mainstream - that was always going to the dogs 🤷