Interesting... Case or no case?
Not had an accidental press once myself. LOVE having my Action Button programed to Silent in Portrait, Video in Landscape left orientation and Photo on Landscape right.
Minor inconvenience to mute the phone while watching content or phone is in landscape... but being able to go straight to taking a video/photo or mute the phone all with one press is way more useful.
not sure how well posted this one is around here so...
fwiw...
download this app:
https://apps.apple.com/app/id1586435171
Shortcut:
https://www.icloud.com/shortcuts/81986879ca084c7f8e4ae0713e885c02
edit... welp
@mikegoldnj didn't even read the OP... here you go^^^^ hold the phone landscape with action button on bottom and you will take a video, hold it landscape with action on top and you will take a photo. press it in any other orientation and it will silence your phone. yw