How can two regular hydrogen atoms (i.e. no neutrons) fuse to create helium?

I quote from a Wikipedia article on hydrogen fusion:
"In the simplest case of hydrogen fusion, two protons have to be brought close enough for the weak force to convert either of the identical protons into a neutron forming deuterium."
That is where the neutrons originate.

The most important fusion process in nature is the one that powers stars. The net result is the fusion of four protons into one alpha particle, with the release of two positrons, two neutrinos (which changes two of the protons into neutrons), and energy, but several individual reactions are involved, depending on the mass of the star. For stars the size of the sun or smaller, the proton-proton chain dominates. In heavier stars, the CNO cycle is more important. Both types of processes are responsible for the creation of new elements as part of stellar nucleosynthesis.

In proton-proton chain reaction, two pairs of protons form to make two deuterium atoms. Each deuterium atom combines with a proton to form a helium-3 atom. Two helium-3 atoms combine to form beryllium-6, which is unstable. Beryllium-6 decays into two helium-4 atoms. These reactions produce high energy particles (protons, electrons, neutrinos, positrons) and radiation (light, gamma rays)

In the CNO cycle, four protons fuse, using carbon, nitrogen and oxygen isotopes as a catalyst, to produce one alpha particle, two positrons and two electron neutrinos.

Mankind assumes the fusion of Hydrogen to Helium elements is the primary process by which heat and light is produced within a most stellar objects. An examination of a spectrographs of the emitted light from our Sun and similar other stellar objects reveals a composition of 74% H and 24% He and 2% trace elements. Although reaction occurring inside the core of a stellar object is process of compression and process of transfer of subatomic particles streams between atomic structures of matter within close proximity where the percentage of light elements, like hydrogen and helium to heavy elements, which dampens or controls the fusion reaction rate. When a localized big bang occurs in a galactic region, like ours, the Milky Way, it is the heavy elements that coalesce first. Once established it is the gravitational attraction to this mass that gathers the lighter elements. As the assimilation of matter proceeds, the solar object grows until the available matter with in local gravitational area is a balance of matter added to that which is lost to outside forces.

I found that on the link below
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