But if i use Media Monkey I have to use it for everything right? Like the library won't stay in sync with Musicbee's right?
The two libraries won't stay in sync, but it shouldn't matter unless you want to use MediaMonkey on your computer. You can use MB as normal, set MB to export your playlists, and then not use MediaMonkey for any other reason than setting it to sync those exported playlists to your device. If it doesn't touch your files except to sync them, it shouldn't mess anything up on MB's end.
If you try to sync playlists and music files with a simple direct sync tool, it'll send both to the device, but the file references in the playlists will be to the files as they exist on your computer, not your phone. That's the advantage of using a music sync program to do it - it knows to change the playlist references to the music files in the location it has copied those files to on your phone. A file sync tool, to my knowledge, won't rewrite the playlists in this way.
The issues with Android 12 prevent the wifi sync tool from accessing local storage and, as far as I know, wouldn't have anything to do with wired sync. I could be wrong, but that's my understanding.