What's wrong with Apple Music? You can upload your whole library without the need of a subscription. And if you upload ALAC files the format is lossless.
I can only answer with regards to my music app desires, which were pretty much fulfilled by the old iTunes app.
It's been a while since iTunes, but I guess that I've always had to painstakingly futz with the sorting to get my album view to be like a traditional music store's arrangement. Frank Zappa belongs in the Z's, not the F's, and the albums shouldn't be ordered beginning with Absolutely Free, Ahead Of Their Time, Apostrophe, Bongo Fury, Broadway The Hard Way, etc. They should start with Freak Out, Absolutely Free, We're Only In It For The Money, Lumpy Gravy, Electric Aunt Jemima, Uncle Meat, Ahead Of Their Time, etc. (I'm a little different from traditional music stores, sorted by recording date, not release date)
And the Apple Music app doesn't get all the album art correct, I've had to add the proper art for something like a fifth of the albums I've ripped. Now comes my two biggest complaints, which never happened with OS / iTunes updates. Firstly, with Music, every OS update messes up some of my painstaking work. Some albums revert to artist first name sorting, and some albums lose the proper album art. Secondly, syncing with my iPhone has never resulted in what my main source has; some albums revert to artist first name sorting, and some albums lose the proper album art.
It's too much work to fix the iPhone sorting and artwork, so I just begrudgingly live with it. The best that I can do is after fixing the OS update mess on my desktop, I delete the Music app from iPhone, disconnect both devices from internet, and download the Music folder to the iPhone, which takes hours for a nearly thousand album library.