I don’t know about other people, but your definition of “theory” doesn’t match mine. To me the word “theory” is almost identical to “hypothesis”, but generally

I don’t know about other people, but your definition of “theory” doesn’t match mine. To me the word “theory” is almost identical to “hypothesis”, but generally a bit more comprehensive (eg consists of multiple hypothesis). Calling something a theory doesn’t require any proof nor that it be true. There are a number of theories related to gravity. That doesn’t mean gravity isn’t a fact, it just means we don’t 100% understand how it works in all situations (eg quantum). Similar for evolution - there are various scientific theories about the origins of species. And it is absolutely the case that we don’t know 100% how we got from Big Bang to here, thus the theories are still theories. If you just want to point to Darwinism and say fact, you’d be doing a large disservice to us all.