My iphone 13 can’t mirroring with my apple watch SE

Maybe it is this

Interact with Apple Watch on your iPhone – Apple Support (UK)

I don't have it on my iPhone or Watch SE either and I am fully up to date. It may be only on "Series" watches not SE.

Mirroring refers to certain settings like Messsage Notifications.

In My Watch tab of the Watch app, go to Notifications, Messages and you should find "Mirror my iPhone" or "Custom".

If you don't se that (it would be unusual) then I advise the following

First force restart the Watch

i.e. press and hold both the side button and Digital Crown for at least 10 seconds, then release both buttons when you see the Apple logo.

 Then, although it may seem irrelevant, while it is restarting Force Restart the paired iphone   Force restart iPhone – Apple Support

Test it for a while. If it is still misbehaving... Unpair and set up again

 Unpair and erase your Apple Watch – Apple Support (UK)

and then

Set up your Apple Watch – Apple Support (UK)

Both the iPhone and Watch updated to the latest iOS? Is the iPhone paired to the Watch?

I'll look it up

So am I!

I have raised it in the senior contributors' lounge to see if the article is out of date.

please let me know!

Hope this helps you…

https://youtu.be/SohJsgVzc4Y

Not on my SE2022

ios16.3 Watch OS 9.3

There are several comments on the YT video about SE watch

Yes I have SE2022. It is more powerful than series 6 and has the same chip as the series 8 so I'm surprised this feature seems to be missing