It really is that bad
Teams is really just a GUI for SharePoint with some bells and whistles added. The development team appear to be using Agile as new features appear which aren't fully implemented and often don't quite work.
The group video call is probably the best bit of Teams. Chats are OK but a nightmare if you want to delete something. The Files interface is poor and don't get me started on the appalling MS Office apps integration.
I have two clients who set out to fully use it and had training days etc. In both organisations its now just used for meetings, chats and a file repository for shared documents. None of the other features get used.