Physics from physics.

Have we really determined the existence of all the fundamental particles of physics?

Is it at all plausible that the experiments that facilitated the discovery of lower level fundamental particles actually created those particles. Do the collisions rather than help discover constituent entities actually create them in a similar manner to breaking biscuits into crumbs. Putting the crumbs together doesn’t make the biscuit, does it?

In the quest of physics to determine the fundamental particles and their characteristics, are any of these situations likely:
That there’s always a more fundamental particle.
That if they get to a fundamental particle, they would likely find that its characteristics cannot be explained by physics/mathematics.
That its behaviour mimics those of the particle from which it was obtained in a similar way to fractals. As you focus on parts of the image, you see a semblance of the whole in it; displaying self-similar patterns at various magnifications.

Let’s just say that physics really works, that they aren’t like crumbs…