Have you looked into home assistant? I haven’t got arlo cameras but it looks like home assistant does support arlo integration. How the heck do I get Arlo into Home Assistant? - Third party integrations - Home Assistant Community
You can also use free cctv software with home assistant such as frigate which I personally do use with Reolink cameras and you can set up your home assistant as a NVR also. You can also integrate your habitat into home assistant if you are really looking to join everything together.
Frigate also all runs local so no cloud required for your cameras with China snooping 
