Help please! I lost my settings icon while moving it

Default apps are part of the iOS and cannot be deleted. Search all home screens and all folders.

If not found, use Spotlight to find Settings and then... Settings > General > Reset > Reset Home Screen Layout.

Go to Settings...

Kinda hard to do that when they can't find the Settings app. 😉

No worries, I've done the exact same thing.

Go to Settings > General > Reset > Reset Home Screen Layout

You're welcome, good luck with your iPhone

You're welcome.