Is there anyway to fix these settings myself?

Hello Apple, I had just downloaded your new iOS 11 update. I do have a concern with two issues. 1. Being I have my iMessage notifications on no previews but when I scroll down to view my notifications I would like to view my message. But with the update it’s either I have it on or off and when it’s on when unlocked it shows all the time when I only want to view it when I scroll down my notifications and not let everyone see my messages when I’m on my phone. 2. I do not like how the screenshot works. It takes to much time to go in to press done to save it I want it just going into my camera roll not showing up at the bottom of my screen to do it.