No, it is not possible for a black hole to be created with just one electron or proton inside it. Black holes are formed through the gravitational collapse of massive objects, such as stars, and require a significant amount of mass to create a gravitational singularity.
When a star collapses under its own gravitational force, its core undergoes a violent implosion, resulting in the formation of a black hole if the mass is sufficient. The minimum mass required for a black hole to form is estimated to be several times that of our Sun. This means that the collapse of a single electron or proton, which have extremely low masses, cannot produce a black hole.
In order for a black hole to form, there needs to be enough mass concentrated within a small volume to overcome the forces that normally prevent gravitational collapse, such as pressure and thermal energy. This is why stars with a much larger amount of mass are the primary candidates for black hole formation.
It's worth noting that black holes can also be formed through other processes, such as the collision of neutron stars or the accretion of mass onto an existing black hole, but these processes still involve significantly larger amounts of mass than a single electron or proton.