Apple Music won't add music to my library on MacBook Pro

I am incredibly frustrated with Apple Music on Mac. It's unacceptably unreliable, especially with regards to adding music to my library. When I try to do so, there's (approximately, obviously) a 75% chance that it won't work. I click "+ Add", the spinner spins, and nothing happens. I don't even get an error message in the lower-left; just no feedback whatsoever on what went wrong. Sometimes, when I quit Music and restart it, I find that it was added, but usually, it's like I never tried.

This is one specific issue that has gotten so frustrating that I was compelled to post here, but in general, I find Music on Mac to be extremely frustrating - it forgets that albums were added to my Library, it throws errors when I try to do things, and it generally acts like a poorly-designed and -written app that is out of character with Apple's usual standards for software.

If anyone has any suggestions, I'd love to hear them. Thanks in advance.

Additional information: I'm on a MBP (13", late 2022, less than two years old, M2 / 16GB) and using Music version 1.5.1.24. I have high-speed and generally quite stable Internet at home.

[Re-Titled by Moderator]