Idk if anyone had a similar problem before, but I live in EU by the countryside, at first there were only a few but now it happens more and more often to see drones passing over my house, I am sure they are civilian drones because law enforcement has no reason to use them since the area is quiet (and honestly I doubt they would be able to do so), however it bothers me enough to know that there are people who get over the fence and enter my property going to look at what they want, does anyone have any advice on what to do?
That is incorrect on a federal level, your milage may vary with city/country/state laws. Federally in the United States the right to reasonable expectation of privacy does not extend to outside of your house per Hester v. United States, 265 U.S. 57 (1924). The government is allowed to surveil you from public airspace without a warrant per Florida v. Riley, 488 U.S. 445 (1989).