@nicholas2019 It's the combination of suggestions already mentioned that will address your concern. Using things like motion alerts to get an email of the motion activity for starters, while that can potentially create too many alert emails, but at least you would have them. Some small enhancements coming soon will be able to help you there.
Likewise with MV Cloud Archive, the camera will dual-record to both the camera and to the cloud for 90 or 180 days depending on your license level. That is a separate license and is different from the "MV Sense" licenses where you get the first 10 for free. More info on MV Sense here https://developer.cisco.com/meraki/mv-sense/#!overview/overview
In addition, theft of the camera itself is not typically a problem when they are properly mounted, out of reach, and/or somewhat vandal-proof (IK10+ rated) and cannot just be ripped off a wall or ceiling even if they are within reach of a vandal. Plus, a vandal is not going to steal a camera thinking that they're doing so to hide the evidence. Even if they DID recognize it was a Meraki camera, and decided to steal it in order to also steal the video evidence, that can be addressed by not only having cloud archive but also additional cameras covering those sensitive areas where camera theft might be a concern. And one of the earlier answers is also correct about all MV video being encrypted both in transit and at rest on the camera itself.