How do I turn all Apps’ notifications temporarily off in iPhone 14 Pro?

I have some 60+- Apps with notifications on. Each with a different type of setting and, at times, I change the Apps I get notifications and their settings as well. I work with Videos and music audio while I like, at random hours of the day, temporarily shut ALL Notifications off quickly. I used to be able to turn them all off by just going to Settings/Notifications and turning Allow Notifications to off which is no longer available. I tried Show Previews to Off, but Notifications still appear on top of my screen. It appears I can no longer shut all Notifications off in iPhone 14 Pro (iOS 16.2) without going to each App at a time, every time I need to turn them off. I read that I now need to go to Focus and then turn (?) Do Not Disturb on. But how do I turn Do Not Disturb on to all Apps without having to go to Apps>Silence Notifications From and selecting all my current Apps, one at a time? I need Notifications off at random hours of the day, so scheduling does not help. I appreciate your time reading this and trying to help me. Is there a quick way to silence all notifications in a flash?