I suggest the Google Nest camera’s. Stay away from cheap Chinese camera’s and even better known brands like D-Link, Linksys etc. They all all treat the security and privacy of your data stream as an afterthought.
Some cheap camera brands don’t even respond to strong warnings and public outcries over big holes in their systems and leave them unpatched for the world to see.
We can argue about Google and Ring (Amazon) and their privacy policies but they have do a lot to loose if their cameras are easy to hack.