Video security is the way to go. I have three cameras on our place in the mountains; at home, just one camera plus a Ring video doorbell.
If you are looking to add a first device, I can't recommend Ring highly enough. The device is really well built, it's designed to be powered by the shitty doorbell transformer you probably already have installed in your house, but it can also be powered via USB or solar. In addition to the video doorbell functionality, it's also got motion detection built-in; you can adjust the motion sensitivity, including which areas do and don't respond to motion, disable it on a schedule, or disable it entirely.
The cool part: As soon as Ring notices motion, it starts recording and uploading the video to the Ring service. By the time someone notices you have a video doorbell, the video has already been shot and stored...
Finally, if someone is jacking shit from your porch, you can share the video to other Ring users that are geographically nearby - like an opt-in digitally-powered neighborhood watch.