StanBy mode isn’t working on my Iphone 13 Pro

Go to Settings > StandBy > Display. Choose one of the following: Automatically: The display turns off when iPhone isn't in use and the room is dark. After 20 Seconds: The display turns off after 20 seconds.

Use StandBy to view information at a distance while iPhone is ...

Start StandBy

1. Go to Settings  > StandBy and make sure StandBy is turned on.
2. Connect iPhone to a charger and set it down on its side, keeping it stationary.
3. Press the side button.
4. Swipe left or right to switch between widgets, photos, and clocks. Swipe up or down to scroll between options for each of these views.
5. When Night Mode is turned on for StandBy, the screen adapts to low ambient light at night and displays items with a red tint so that it’s not intrusive while you’re sleeping.

See how it looks on my iPhone 12 Pro iOS 17.4.1

I have a 13 pro max. The only time my standby mode works is when I’m connected to CarPlay and my phone is on the charger but I can’t unlock my phone or view/do anything until I take the charger out. Doesn’t really help for sleeping. It’s actually annoying while driving. And it doesn’t have to be on its side to cut on, it does it when u don’t touch the phone for a couple minutes.

Same issue and no resolve