Am I wrong for secretly tracking my girlfriend’s location because I was worried about her safety?

I put a location tracker on my girlfriend’s phone without telling her.

I told myself I was only doing it because I worry about her when she goes out alone, especially when she gets home late. I wasn’t checking it every minute or trying to control where she goes, but I would look sometimes just to make sure she got somewhere safely. The more I think about it, the more I’m starting to feel like I crossed a line. She never agreed to being tracked, and if I found out someone was checking my location without telling me, I’d probably be angry too. Part of me still thinks my intention wasn’t bad because I was worried about her safety, but I also know good intentions don’t automatically make something okay.

Am I wrong for doing this even if I was only trying to make sure she was safe?