I have been using wz_mini_hacks [1] on my Wyze V3 and have been pretty happy with it. Among other things, it has a “self-hosted” mode which patches the binaries running on the camera to no longer phone home to Wyze servers. I’ve been using it on my local network over RTSP with no issues.
[1] https://github.com/gtxaspec/wz_mini_hacks