Private Alternative to Amazon IoT (FireTV, Alexa, Ring)

Before embarking on my privacy journey, I setup a very basic IoT of all Amazon products - FireTV, several Alexa Echos, and a Ring doorbell camera. Now I am desperately trying to find an affordable replacement for them. I am planning on buying the Nvidia Shield TV to replace FireTV and open to suggestions, but I'm unsure about the others. FOSS would be great too, though I don't think I can go full hog and build my own devices.
The only FOSS, privacy-centric Echo alternative I know of is the NeonAI Mycroft Mark II, but this is $400 per unit. Since this would be a fortune just to put one in each room, I'm wondering if anything else more reasonable has emerged yet.
As for the Ring doorbell, I've seen various recommendations for Arlo, Eufy, and Ubiquiti/Unify, but I can't tell if any are actually much better than Ring in terms of privacy and security, especially for the steeper prices. Would love to know the community favorites.
Thanks in advance for the help!