Physics, as a natural science, deals in “if we do this then we observe that”. Note the “we”: it is inherently subjective. The models resulting from that are, similarly, a product of our minds seeking analogies and stories. Those models are useful for coming up with more experiments but are necessarily simplified maps, and if you have a map that exactly corresponds to the 100% of the territory then the map you have is A) useless, and B) impossible (so if you think you found one, you ought to think again).
At best you will never find such a foundational description of reality. At worst you will believe you’ve found one and be angered at anyone who chooses to use a different map and dares to not treat yours as gospel.