>>94517
FLAC is silly for phones, but essential for archiving. I doubt the DAC inside many phones would be able to squeeze out every detail of the FLAC. I usually download music in and rip CDs to FLAC, then convert them to 96kbps Opus for my phone.
And I do subscribe to Spotify. It's far from great, the app has horrible sound quality, but it's useful for discovering artists I would only have heard about hadn't it been for Spotify. And if I really like what I'm listening to, I'll then buy a lossless copy to support the artist.