Display and mirroring options in Sequoia

I updated to Sequoia and it's unbelievably frustrating just trying to get my dual monitors to work like they did before. My (prior) main monitor now just says click the window and window box to enable mirror. The monitor connected through a hub which is my secondary monitor doesn't display the desktop properly so I can't get to the mirroring controls. And the function of the display settings, the way they are no longer containing any of the mirror settings which you can only access through the pull-down menu at the top on the right. I've spent a half an hour struggling with this on two separate occasions and ended up just shutting down the machine because I don't wanna deal with it. I've been with Mac a long time and stuff like this is making me wonder why. I want the large display to be my main monitor and the smaller display to be my extended. I don't want to mirror anything. Has anyone else noticed that this is a really frustrating issue? I'm either missing something really simple or this is a step backward.