To add
In camera settings, you can change it, so the volume button takes a picture.
Not sure how well you can take a pic with the cover still covering the screen.
Not had notebook style covers, so don't know.
.....
If I helped or solved your problem, please like or tick solved.
Have been using phones since 1993, and am self taught.
I offer advice for free, cos I think it'll help, if it doesn't, explain why, I might learn something new too.
Current phone Galaxy S22 Ultra
Previous phones: most S series, Note 2, Samsung Alpha, iPhone 3gs, far too many Nokia's!