Godzilla... was just an ordinary human in a rubber suit, in a movie studio sound stage where scale models of cities and landscapes had been built. In later years, as film technology improved, the more detailed films of Godzilla were created with a CGI model, with the virtual skeleton and muscle movements derived from filming a human actor in a mo-cap suit. It only looks real because the animators are so skilled, and the actor is so good at mo-cap acting. It is in no way live footage of a real animal.
That's right. Godzilla doesn't exist. He never existed. He was always a made-up movie character. I bet you could get literally thousands of people to believe that. With enough gaslighting, I bet you could even get someone whose actual home was actually stepped on and burned by Godzilla to believe that it was due to an earthquake or tsunami or tornado or nuclear reactor meltdown or something equally farfetched.