Removing the main lock screen

I really want to delete this lock screen, it is terribly annoying because of its huge bold numbers, but there is no way I can do it. He writes that I need to choose a different default screen, but I have no idea how to do it. Please help me, because as soon as I turn off the other lock screen (with focus for sleep), I immediately return to this particular screen (although I have screens without focus), and I do not know how to make the other one by default. I can't even change the wallpaper on this default screen:(

Please help me, please 🙏🏻🙏🏻