I need to change from 5G to 2.4g for my wyze outdoor cameras to work. How do I do that

No. This is not necessary.  All of my Wyze cameras, including the Wyze 3 Outdoor, connected to my Orbi immediately with absolutely no changes to the Orbi.  Wyze camera use the Wyze smartphone app to create a QR code which the camera views and uses to learn the WiFi SSID/password of the network.  The camera has only a 2.4G WiFi radio chip, so it cannot detect, connect to, or be distracted by 5G WiFi signals.