can we really ever know true origin?

[Welsh cake]

Right now I know of 2 theories for origin of the universe, the big bang, and creationism. Both of which seem like an unending train of what came before.

Creationism is a non-scientific religious argument that is politically motivated. It lacks explanatory power and empirical evidence and therefore is not a theory. It is a pseudoscience that rejects actual scientific findings from multiple fields of research.

The Big bang model is the prevailing cosmological theory of the universe's early development, which is scientific since there is evidence to support it. It is not to be confused with a cosmogonical theory. The big bang tells you nothing about what came before said event, the origin of the universe's existence, or how reality came to be.

For example if someone created the universe then who created the creator and who created the creator's creator and so on. If the universe came from the big bang then what created the original energy that sparked it? and if you found that out you would have to find out the cause of the cause.

You may want to look up Zeno's paradoxes and such to get a better understanding of logical regression. Its usually best when arguing from philosophies of naturalism and science for us to place epistemological restrictions onto cosmogeny theories, though these can't prohibit infinite regress arguments and causality problems altogether especially when applied by theistic explanations for the origins of the universe, whose obvious shortcoming here is the argument from ignorance.

Or did the universe always exist? My human mind says that there has to be a origin of something and the idea of something always existing is foreign to me, but it is possible.

We don't know. It is still a major unsolved problem in physics.

You see, the laws of physics start to brake down when you look at observing space-time before the big bang event; we lose all experimental support, Planck time ceases to have any useful meaning, quantum gravity theories start contradicting each other, and we have nothing but theoretical physics (abstraction of physics) to work with in an attempt to rationalise the phenomena in question.