You may want to consider that ‘theory’ is a word used to describe that which is UNPROVEN, yet presumed true based on our own limited understanding.
The Theory of Relativity is one that the properties of it have been observed. The Theory of Evolution, not so much.
Theory is a body of findings based of tests and trials and experiments. The TOE has been tested repeatedly. Endogenous Retro Viruses shows common descent for many species. Humans and chimps have a common ancestor; ERVs demonstrate this. Modern genetic science shows the common descent of many related species.
I’m sorry if you don’t want to believe this but its not a matter of consensus. Look up ERVs. The information is readily available on line.