Looking for a self-hosted alternative to the Canary (home security)

Hello peoples,

We've had a Canary home security system since its crowdfunding days. They never did much to improve the experience, chances of connecting during critical moments (and/or recording similar) seemed to go down and down, sensors were unhelpful ("air quality is bad" Okay, HOW is it bad?) and all of the ads in the free version makes me feel like they're always looking for a way to monetize me and my data. I finally canceled my subscription this month and am looking for a replacement solution.

Here are my requirements:

• Wide-angle camera with night vision and audio via a hardwired network port. I can connect from camera to network/NAS/etc

• Self-hosted. I have a NAS that could help with recording and can deploy a raspberry pi† – but also I could get a turnkey box if that's better. No cloud solutions unless I'm hosting the cloud and can do end-to-end encryption.

• Viewable live footage from my mobile device, even when not in my home wifi network

• Motion sensing and recording for up to 24 hours' worth of motion instances

Here are the nice-to-haves:

• No systems built by a Chinese company that is prrrrobably a front for their government and/or could contain their own backdoor code

• Extendable to bring in future cameras

Any advice from you Thunderbirds would be f-a-b. Thank you!

† I am not a complete newbie when it comes to assembling/flashing a raspberry pi – I have set up easy things like a Magic Mirror and an Octoprint – but I'm also not a Linux guru. I'd like something that's mostly deploy & forget