I have not used Wyze cams as a baby monitor but I believe they would work quite well as a visual only device for that purpose. If you want to use a camera as the sound and visual monitor make sure the app has a background audio feature. Meaning you can close the app and do other things on the device while still hearing sound coming from the camera. Also, make sure you can still hear the sound even when the phone’s display is turned off and locked.
For my experience, in the end, we still had to get a stand alone sound monitor for reliability reasons, particularly at night. When using a camera for both sound and visual monitoring of the child; The phone app might crash/disconnect in the middle of the night without warning, a recent update to the app might break something, or a number of other strange things would go wrong too often and we would not hear our child when we needed to. We ended up getting two Vtech DM221 baby sound monitors. Major retailers sell them as well as Amazon. The receiver has a battery in it so you can easily take it with you outside nearby or to another room. Also, you can get another identical one for a second child later on and it will not interfere with the other one due to them having digital radios.
So my suggestion, a Vtech DM221 to hear the child reliably and a Wyze cam to see what is going on would to me be a rather winning combination. Get the Wyze Cam Pan version because once the child starts moving around, the fixed camera becomes useless a lot of the time.