Kudos for at least trying to address this, MS should hang their head in shame, this is not the hardest problem to solve these days. If we could do it in 1995 they should be able to do it 30 years later.
So, what am I doing wrong? How do I get the authentic Teams user experience that everyone else here seemingly has?
Teams fails every day at its basic purpose. Chats are confusing, the threaded ones being utterly useless. Constantly have to use the mouse to do basic stuff like address people or change channel. Stuff randomly breaks all the time, syntax highlighting seems to break in some new way every other week. It's complete garbage software and a massive regression for those of us who remember proper, simple chat software from decades ago.