wyze cameras will not connect since i got 5g internet home gayeway from t mobile

The most simple possibility is that wyze camera uses 2.4G wifi and your TMO router combines 5 and 2.5G into one SSID. Separate your wifi into 2 different SSID, each for 5 and 2.4g. When you use your laptop or smartphone to setup wyze camera, make sure your laptop/smartphone is on the same 2.4g network so it can "see" it. After your wyze camera connects, you can set your other devices back to 5G.

There are multiple threads and the TMO manuals show you how to separate.