The Inertia of Fundamental Particles

We think the electron by itself without the Higgs field would have no mass. What we don't understand is why collections of particles or when you have energy stored in a spot between particles, why that has inertia? Because that's not interacting with the HiggsField. We can't explain that using the Higgs Field. The Higgs field just interacts with the individual electrons. So then the inertia of a box full of electrons is due to something else entirely you're saying? We don't understand the source of that inertia. But it sort of acts exactly like the Higgs boson acts on fundamental particles. In the sense that they both have inertia, yes. They both have inertia which