How did the four fundamental forces come to be?

The goal of "physics" and much of "astronomy" is to comprehend the workings of the universe, and the beginning points of these endeavors are referred to as "fundamentals" when they represent the boundaries of our capacity for observation and mathematical reasoning.

We may have found the "fundamentals" yet, or perhaps the description of the "four fundamental forces" best fits our best observations to date.

We are observers, not initiators, at whatever level we are able to observe phenomena and speculate interactions; thus, at most, we could also only speculate on the "origins" - even if we had the right subjects.

They are the "natural" result of the "Big Bang" initiation of the universe, according to current speculation (which is also a component of the search for the Grand Unification Theory). Speculations concerning THAT event frequently veer toward religion rather than science.

One such derivation is shown here: https://tutor.hix.ai

The four fundamental forces (gravity, electromagnetism, weak nuclear force, strong nuclear force) originated during different cosmic epochs in the early universe due to distinct physical processes, including symmetry breaking and particle interactions.