iTunes CAN'T see the music files and playlsits after phone sync

OK, so here is my big problem.

1st of all I DON'T LIKE SYNC. It's hard Apple to understand, but i DON'T! I don't need my phone music to stay loaded in my desktop iTunes/Music app. I'm DJ, and i work with iTunes for creating playlists, editing tags and ETC. Also i have Much more music, that the iPhone's memory.

Anyway...

Recently i update my 11 Pro with 14 Pro. Everything was fine with 11 Pro. I had disabled sync, and i have about 15 managed playlists on the phone. After the purchase of 14 Pro i transfer all data from the old phone to the new one (via the default setup process).

Today i had to upload some new songs to my 14 Pro, and i found out, that iTunes can't see any file and playlist. The storage bars down in the iTunes can see that there is 9k songs, but the files window is empty:

Did someone face that problem, and is there any solution for this?

I don't wanna delete all my music and playlists and start uploading them again.

There is too much work thrown into it. Any advise will be welcome.

I'm really tired of Apple's Sync S**t.