It's you who doesn't understand how
scientific theory works, which isn't "just a theory":
Scientific theory - Wikipedia
It can't be answered because the premise is nonsensical. So again, go learn taxonomy then come back and ask questions that are actually coherent. Apes aren't a single species but a classification that consist of many species, both past and present.
Our species are hominidae (i.e. "great apes"), our more recent ancestors were hominidae, and other contemporary species are also hominidae. It's not a singular lineage; it has many branches. We share a common ancestor with other primates, but we didn't evolve from any contemporary species (which is why questions like "If we evolved from monkeys then why are there still monkeys?" are so asinine and imbecilic.) So yes, we are apes, and so were the species we evolved from.
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Education is your friend. It's embarrassing watching people attempt to debate subjects they have no knowledge or understanding of, especially when it's due to willful ignorance and intellectual dishonesty.