Welcome to the Forum, @Bigchungus! 
I don’t know what “Bigchungus” is about, but I laughed anyway!
As @ssummerlin said, there are numerous posts in the Forum about reverting to previous Wyze app versions by using a site like APKMirror or APKPure, but if the loss of notifications is a new experience for you, then that might be worth investigating and may save the hassle of replacing the app with an older version that’s likely to become unsupported at some point.
You mentioned that you “have reset everything” and “[m]essed with all the settings”, but does that include things like what are mentioned in these posts?
Providing more details such as exact troubleshooting steps you’ve taken, what Wyze app you’re using, what OS and phone model you’re using (Android has many variants), etc., will assist other community members in providing better help for you.
Back to your original questions, though:
As stated, older app versions can (with relative safety) be obtained from the unofficial distribution sources mentioned above. As far as preventing automatic updates to the Wyze app is concerned, this is how I’d get there:
- Long-press the Wyze app icon in the launcher (your phone’s home screen or list of apps).
- Tap App info in the pop-up menu.
- Scroll to the bottom of the App info screen (i.e., swipe up from bottom) and tap App details.
- On the Wyze app’s screen in Google Play Store, tap the ⋮ menu in the upper-right corner.
- Un-check Enable auto update.
After that, Google Play Store should request confirmation whenever a Wyze app update is available.