Tagging the music

Music
1

Basic: Rasp Pi 4 with DAC-Hat and Volumio
i have my music all tagged with Mp3-tag ID3v2.3
some albums are displayed correctly, others are missing the cover. for some albums all tracks are listed individually.
I tried everything possible but unfortunately have had no success.
so I have a mess in my musicplayer.
maybe someone can help me

2

Search the forum on Album Tagging as it has been explained many times.
Very basic what works:
Organize you’re library as:

Artist folder > 
     Album Folder > 
          CD1 folder > 
               tracks xxx
               cover.jpg
          CD2 folder > 
               tracks xxx
               cover.jpg
          CD3 folder > 
               tracks xxx
               cover.jpg

Make sure the disc tags are filled:

CD1 => disc 1
CD2 => disc 2
CD3 => disc 3

and rescan you’re library, when done.