wifi does not work on new iphone 14

Hi VictorZamp.

Welcome to the Apple Community.

Congratulations on the new iPhone:

We are all apple users, like yourself, in the community.

Thank you for sharing your difficulty with us.

Apple support have articles online that may help:

How to: Restart your iPhone – Apple Support

How to: Connect to Wi-Fi on your iPhone, iPad, or iPod touch - Apple Support

How to: Connect iPhone to the internet - Apple Support

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Trouble-shooting:

If your iPhone, iPad, or iPod touch won't connect to a Wi-Fi network - Apple Support

What to do: If you can't activate your iPhone or iPad (Wi-Fi + Cellular) – Apple Support

How to: Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support

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More support, if needed:

You might want to reach out to Apple for support:

eg: There is a "Get Support" link at top right on this discussion page

or

       Apple phone numbers around the world:

  Contact Apple for support and service - Apple Support

All the best :-)