If you're willing to put an afternoon's work into it, you can easily and inexpensively build a home surveillance system with ZoneMinder that stores all data securely and safely on-prem. The cops can still take it, but it requires a few warrants to do so.

Shameless plug -> https://nbailey.ca/post/nvr/

But it's also important to only record what you absolutely must. I think putting CCTV cameras inside your house is insane, and putting up cameras in any "private" outdoor area should likewise be avoided. Once the data exists, somebody will want it eventually.

Do you have any recommendations what cameras to use? Rather simple set of requirements, but I really struggle to find anything suitable: compatible with zoneminder/motioneye, poe, no cloud nonsense, outdoor weatherproof, preferably non-chinese, reasonably priced. Don't need NVR. Was eyeing hikvision, but there seems to be mixed feelings about them.