I refuse to use streaming services since they exist. Pay per month to listen to everything? No thanks. These days, I buy everything I like on BandCamp. I have a "mirror script" for BandCamp sites I find interesting, to be able to listen into the stuff, and decide if it is worth buying.
I use a MPD based setup on a rpi at home. Built a small web interface to control the thing (MPD clients are plenty but rarely sufficiently accessible). Even wrote my own AI based presenter[1], which will make a description of the cover art part of its moderation. Nice for me, since I am blind. A simple feature (took me a few hours to write) that a proprietary vendor will actually never offer. In this particular case, if I don't scratch my itch, nobody else ever will.
When I am mobile, I use the "Shuffle All" button in the BandCamp app to play through the things I've hand-selected over the past 10 years.