synchronization music

iPhone music synchronization with MacBook is getting worse and worse. I remember how it was in 2012-2015: everything went automatically, I did not even check. You put the phone for charging, the playlists are automatically actualized by tracks stored on MacBook. Cable for synchronization almost did not used. Later, problems sometimes began to appear. You think that everything is synchronized automatically, but when you going out you understand that there is not so. At the same time, the synchronization by the cable worked without problems. Now the synchronization via Wi-Fi is almost never starts automatically. All the time I use the cable. At the same time, since we using Finder, while the iTyuns is turned on, you have no chance for the successful synchronisation. You have to close iTunes. But even in this case, the process freezes and does not synchronize properly. It need to reconnect repeatedly many times. And so happens with different iPhone and MacBook in my experience.