I'm trying to use slack, i'm new. But I can't seem to find a normal, sober huddle background. Any help? It's all these cartoonish backgrounds, I wanna be professional over here

is there a way to always have this enabled? i want to click on the search bar up top and not have to click the button every time.

On macOS (and web), Slack is frequently putting parts of previous posts in the text entry field, as drafts. It's infuriating. Is there a way to just disable that?