I consider that tying myself in knots. On my Samsung I just copy the files over and play them
Privacy and openness are two independent, orthogonal concepts. I agree Apple has a better overall story on privacy but I care more about openness, especially in the current political climate.
https://vox.rocks/resources/ios-flac-player
And then there is that whole running an operating system written by a company whose whole m.o. is to invade your privacy.