I even tried to clean the lense but it didn’t work too

Please help me if u can:( so I recently bought this camera from a seller, which said that the condition was 10/10. Physically on the outside, everything looks good and new. After bringing it home, there were 3 films in the camera so I tested it out. There was something like a ink bloch on the film itself? So I tested it with new films of my own, and the same thing happened. I used different lighting and the picture turned out the same, and these films of my own aren’t expired. So just in case I took the films out and replaced it with a new one (which isn’t expired)and suddently the red light was not blinking and I couldn’t take pictures although I didn’t drop the camera:(