Hi all,
After looking at all the posts in the forum, trying to tweak all the settings to make it work, I haven't progressed at all so I decided I would post.
The issue : For 90% of my music, MusicBee can't find any artwork or when it does, it's wrong. I'm regularely using MusicBee to update music in bulk and was uploading it manually but this time I have too much, so I wanted to update it automatically. (I have already deleted ALL the artworks so all tracks are empty from artwork)
One example for the track : Abakus - Dreamer.

There is no match for this track, but with a quick Google Search, there are plenty of matches, including deezer, lastfm and spotify :

In the settings, I have deezer, bing, lastfm and fanart for artworks, in tag (1)
In the internet tab, I have plenty of custom searches that I found on this forum

MusicBee is 3.4.8033. Not sure what else to do at this point. This example is not an isolated example, it happens pretty much with 90% of the library.
The ideal scenario for me would be Select All > Auto-Tag By Track > Update Missing Artworks
For the source, would search and update automatically in that order : Deezer, Spotify, LastFM, Soundcloud, Google
Also, ideally, I would rather receive the TRACK ARTWORK, I function with tracks rather than albums. In a second option, album is ok of course. But the best option is the track cover.
This is the ideal but of course I'm happy with just deezer and lastfm, which I believe are built in in MusicBee, as they have pretty much every cover I need. Then Google for the very odd music.
Any help is welcome on how to make this work properly, I'm sure this is how it's meant to work and I must be missing something somewhere. Perhaps the issue is that MusicBee is looking for an album cover using the track name ? (I ALWAYS use the track name in the album field, this is a personal preference, I di not want to have anything to do with albums, except very rare cases. This is because most tracks I listen do not have an album, only tacks)
Thanks in advance!