I have a Eufy Doorbell camera and their tilt-and-pan camera (to monitor my dog while I am at work). I've had no issues with saving videos from Eufy products. Everything is super clear because all of their new devices are 2k resolution cameras. My friends who have Ring or Nest say that the Eufy microphone and speaker sound so much better.
I also like Eufy since the videos are stored onto SD cards. I guess that means that other than the still shots that are sent to your phone, an enterprising thief could smash the camera and steal the card and you would only have a single photo to go off of though.
My townhouse is 4 stories. The 4th floor is where my pool table, dart board and home theater are located thus where I spend most of my time when I am home. I got the doorbell camera so I wouldn't have to navigate all the steps every time someone rang the doorbell.
They NEVER delete ANY video, just hide your access away. I had some footages way back in 2019 that I could still access, so long as I have the video's uuid.
They also made several updates to reduce image quality (added fake motion blur). The goal I guess was to 'enhance' privacy of passer by but in reality it also means unless the person of interest stands still facing the camera, the footage is worthless as a CCTV device. It's jarring to see crystal clear videos from 2019 vs the blurry mess that is today. I replaced the front door one with an Eufy, it has its own problem but at least it's not a complete POS like the Ring products.