Why can’t they just read?

I have so many issues with students not reading my announcements on canvas. I make clear expectations for coming assignments and weeks in person. At the end of the week, I post a reiteration of the same announcements, in case they forget about something. BUT THEY NEVER READ IT. I don’t understand this.

They do the work incorrectly because they refuse to listen in class and review the same thing I say on an announcement. Then, they email me asking the same thing I covered in class. 😭 I usually email back saying “please read my latest announcement on canvas.”

does anyone have any advice on how I can make information stick? This may be a stupid question but I’m at a loss for words at this point.