I use a fairly vanilla Foobar2000 portable install to listen to my own files at work (via an old Henry Kloss Model 88. On the run I have a Note 8 running PowerAmp and Foobar (depending on my mood). If I can’t find music on Bandcamp (and I usually can) I buy CDs from the last physical record shop in my area and rip my own FLAC files.
Then there’s my Sony MZ-R920 and stacks of MiniDiscs but that might drift too far from the thread topic.