I think that in your case, it would be extremely good to choose such a security system that it is non-free. I've seen them on the Internet. For example, ajax may suit you, as it can be attached without drilling the walls. There are also a few more options that you can personally read about on the Internet. Or I can send you a few options in PM, if you are interested in this topic. I've seen different things, and most of the Chinese sensors from aliexpress just don't stand up to any criticism. It is better to look for something more reliable, but not too expensive for the apartment you rent.