Can electrons have smaller things within

Electrons are considered elementary particles in the Standard Model of particle physics, which means they are not known to have any smaller known constituents or substructure. They are one of the fundamental building blocks of matter, along with quarks, which make up protons and neutrons. While theories beyond the Standard Model, such as string theory, propose that particles like electrons could be manifestations of more fundamental entities (like strings), these ideas remain speculative and are not confirmed by experimental evidence. As of now, no experimental data suggests that electrons have any smaller components. In current physics, electrons are treated as point-like particles with no known internal structure.