Router/Ring Camera Advice

I'd get a new door camera.

I've already stopped using all cameras that require a subscription to use, ie. Ring, Blink, etc.
All of what I use now is from the Eufy brand of security, cameras, door locks, Lights, etc. I get all of these from Amazon.

I see that Walmart is now carrying some Eufy products in the store.
There are no subscriptions.
Check them out on YouTube and see if it's something you're interested in.
I'm not sure what they use as far as frequency goes. My router does both 2.4 and 5 ghz