Do you find rotating your monitor makes it useful? I am interested, because I haven’t found a good usecase for them yet.
I have every application fixed to a specific workspace, which are fixed to specific screens. Here I have spotify_player, KeePassXC and pavucontrol fixed to the rotated screen, because all of those applications have long lists of items, so it’s better to have more vertical and less horizontal space. And if I need terminals on that screen, I just put them stacked on top of instead of next to each other.