it is unfortunately, aware if several cases up here.
designed for ease of use
I know the Pros won't agree but I have a Eufy system and I have 2 door sensors, 5 cameras (including one that is mains powered and one is the doorbell) and an entry keypad. I find it excellent to be honest. It is not recording 24/7 but I can adjust what the camera reacts to so I can pick "Human" and it will not record cats going in and out. It will recognize a human and take a screenshot of their face and I am notified immediately if anything is picked up. I can then view the clip or simply watch in real time and I can speak out of any camera or doorbell by hitting the "Mic" symbol on the camera screen.
There are others such as Arlo or Simplysafe which do a similar system but I can't fault Eufy. For high traffic areas such as my front camera I get about 4 months on one charge if set to sensitive (it picks up people out on the street, 50 feet away). I get about 7-10 months for the other cameras.
This system does not use PIR detection, it uses the camera intelligently so you can even draw an outline on the screen of which area you want "detected".
I'd certainly punch the names into Youtube and check the reviews