Since 2013 when I've started paying for Spotify it has turned from one of my favourite apps to one of those I hate most. On my previous Android phone it would freeze every other day when there was no internet. Why? Who knows. Could be related to me using SD card, or could be something else. The phone wasn't very old, but still on many days it was basically unusable. Somehow I was gifted a new phone and it kind of works. I say kind of, because sometimes when I click on a downloaded album it doesn't work - no tracks display. Why? Who knows. And few days ago something bugged out and tracks suddenly started setting volume to max. Apparently it's known issue that appears occasionally. Why? Who knows. Happily I wasn't wearing headphones so I did not get hearing damage. But who knows, maybe this will happen again.
There is also desktop app which severely crippled local file support few years ago. That really sucked for me, because I record a lot of my own stuff and I want to listen to music in one place. I don't know if this was fixed since then because I pretty much switched to using web app, which usually works. There is also iPad app which seems to routinely delete stuff I have downloaded do my iPad; and sometimes it also freeze in offline mode when browsing my library. At this point I didn't even try filing a ticket with support, I lost hope of them fixing this. I suppose soon I will simply stop paying them and make switch to something else.
EDIT: Why post this here? I hope people at Spotify see that submission about Spotify is on top of HN, and maybe, hopefully, someone sees my comments and thinks twice about setting 2021 OKRs and put some capacity into improving the app reliability. I know, this is optimistic, but who knows.