Hey LDelSanto86
By design, when you tap an Event thumbnail (12-sec cloud clip) if it is the first time you have viewed it, it is downloaded from the cloud and saved to a cache on your device.
If you access the same Event again, it is loaded from the cache (assuming you haven’t Cleared Cache in the interim.)
Wyze app > Account > App Settings > Cache File Size > Clear
Clearing cache will remove any auto-saved Event videos from your device.
Check out this topic (especially the Postscripts section) for some useful detail on the Android file system: