No network connection in my new iPhone 13

Thanks for reaching out, FatimaAlbadi.

We see you reached out from the article, If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network. What this message means is that your iPhone can find and connect to your router's Wi-Fi network, that is it sees the actual physical equipment, but that your network does not connect to an outside data connection from your internet service provider.

You may want to confirm that your internet connection is active, and if it is, that your Wi-Fi network is not restricting access through firewall or other security settings.

Recommended settings for Wi-Fi routers and access points -- Since the screenshot you provided also recommends “Change your settings”, make sure your router is set up using these recommended settings provided by Apple. If you don’t manage your home’s Wi-Fi network, ask the one who does or contact your ISP or router manufacturer for help.

Hope that helps!