2.4 Ghz Wifi is not outdated. It has a purpose.
Your unwillingness to answer my questions tells me that you had already made up your mind that this was not going to work and that it was Wyze’s fault.
The reason being, even if your phone was connected to 5.0 Ghz is should still show up when connecting the camera.
I don’t know of any ISP that installs 5.0 Ghz Wifi only. That would cause them a lot of headaches.
2.4 Ghz connections are very common with Wifi cameras, switches, receptacles and other home automation.
@Known1 and @Omgitstony have explained why.
If you actually want it working answer our questions and we will help you.
Router make and model would be a good start.
Do you know your Wifi SSID and password? Don’t post here, just yes or no.