Best music player for .mp3/.flac? (opens in new tab)

My issue is that I have yet to find a music player than sees/finds all of my music files\. I have a mix of \.mp3 and \.flac files that I have been accumulating for decades, I don't stream\. I am finding it crazy difficult finding an app that finds all my files\. Any suggestions? I've tried many different apps, too many lol :-/\.