I recently got a Samsung S21 about a week ago, and recently I've tried downloading music onto it. However, at least half of the new songs I download skip and stutter to the point where the song is not listenable. This occurs regardless of the music app I use, and it occurs both with bluetooth earbuds and through my speaker. I've tried just about everything I could possibly think of, yet nothing seems to fix this issue.
If you can stream music from Apple music Pandora etc without it stuttering that means the app itself is fine in the settings you can pick where to download music change that setting see if that helps if not uninstall the app that you're trying to download from and reinstall it.