My last experience with iTunes was a long long time ago, in the iPod days, when you needed to use it to sync music, but it was a horrible piece of software back then.
I kind of think they made it shitty on purpose to push everyone towards a subscription. Many of these issues apply to locally stored songs and playlists, which is how I use it.
In fact, I was never able to use Apple Music because it handled bad internet atrociously. And last time I checked (2022?) it was still not fixed.
iTunes was a great software, even people using it on Windows liked it a lot.