How does a magnetic field work? (How is energy transformed? )

Why not look at the principle of magnets first?

Electrons rotate in a small range in a magnet to produce a magnetic field (ampere current loop hypothesis)?

When two magnets are close together, the magnetic flux passing through the magnets decreases, and the current in the magnets has to be increased to prevent the decrease of magnetic flux, that is, the electrons move faster, and the magnetic potential energy is converted into the kinetic energy of the electrons. ?

My understanding is that electromagnetic energy is converted into kinetic energy (mechanical energy)