This may depend on your location. Wyze have been mentioned a lot on here but they are double the price in the UK than the US.
What features do you need ...
Do you need power?
Wireless or LAN Network?
Monthly subscription for cloud storage or local storage?
I had to install an external wifi extender on my house as I didn't have network coverage where the coop is and I have 2 x Reolink Argus 2 with solar panels.
I only use mine to check on the chooks occassionally so I don't use any recording at all, just real time viewing. I think the chickens would probably set the sensor off every few seconds and flatten the battery too quickly anyway but these cameras have local storage on a sd card.