PowerAMP

I prefer MX Player with custom codecs for most videos due to its comprehensive features and quality of life customization options, for HEVC HDR videos I use mpv as it’s one of the few players capable of displaying them properly on my phone.

For music, I use Neutron because I’m an audiophile

On Android, I have been using AIMP for a few years now. It’s pretty damn good.

VLC?

VLC player ftw

deleted by creator

VLC.

VLC for sure https://www.f-droid.org/packages/org.videolan.vlc/