MS Teams is not my favourite app right now. To be honest, it has never been, and will most probably never be.

MS Teams is still on my shortlist for the worst app ´

The new teams isn't too bad. Uses half the ram compared to having steam open in the background.

I work in two organisations. I can have only one at the time open in Teams, which means that the other is blocked. And if I open a file that blocks everything.

Just before the pandemic I was at uni using my Microsoft Office license and I saw that a new app was installed to my laptop.
Never even gave me an option. It was just there on my desktop.
I hated it from the start, I wanted to unistall it but left it there because I thought it would't hurt anyone if I didn't open it. Boy was I wrong. Soon enough I had to open it, use it, update it, shut it down by force, restart my pc because of it. In the past years Teams has been wreaking all sorts of havok.