Photos automatically added to shared album without consent

Hi, i have been taking pictures using my cameras. And when i check my album, it suddenly have the “shared album” icon marked on that photos. why is it automatically added to shared album?? When i just open my camera and snap some pics?? Also it didnt show which album i added to. I am scared as **** who might be looking at my pictures. i transferred those quickly to my private album. what is happening?? Why does this happened?? I feel like there is no privacy for me on my own phone 😭