There is also the possibility that the experiment itself is correct and the laws of physics are correct, but we applied them wrong, leading to a wrong predictio

There is also the possibility that the experiment itself is correct and the laws of physics are correct, but we applied them wrong, leading to a wrong prediction or experiment analysis. Many many calculations take short-cuts or make approximations. Or we apply a theory wrongly. In all these cases, we learn something new. Hitting the prediction (of the standard model) is boring.