If you're wondering whether or not you should have a camera in your garage, the answer is maybe. It depends on a few factors, like how big your garage is, what kind of neighborhood you live in, and whether or not you have valuable items stored in your garage.
If your garage is attached to your home, then it's probably a good idea to have at least one camera pointed towards the entry door leading into your house. This will deter burglars from breaking into your home through the garage, and it will also give you a clear view of who is coming and going from your house.
If you live in a high-crime area or if you have valuable items stored in your garage (like bikes, tools, etc.), then it's definitely worth considering installing one or more cameras in your garage. Having footage of any thieves that break into your garage can be really helpful when working with police to catch the culprits.
Overall, deciding whether or not to install cameras in your garage comes down to personal preference and risk assessment. If you're worried about crime in general or specifically worried about someone breaking into your garage, then camera surveillance may give you some peace of mind.