Okay, let's assume that one photo is actually found to be faked. No one has shown it yet, but let that go and let's play pretend. One photo, out of the thousands, is not only a fake but an obvious fake. One that even someone as ignorant as Jack White would be able to legitimately show is fake. Okay, we'll pretend that for the moment.
So what?
What you have done is falsify a single photo. The fact that it's fake gives you a reason to reinvestigate a lot of other things, including and especially all the other photos on that roll, but you have not proven that anything else is fake just by showing that a single photo is. You still have to answer for all the other evidence. You have to explain the other facts--and there are a lot of them. You can't just say, "Well, that one photo is fake, so of course everything else is fake." Because if a single piece of evidence, no matter what it is, cannot be shown to have been faked, well, that single piece of evidence is from an authentic trip to the Moon. The more pieces of evidence that cannot be faked (and I can name plenty just off the top of my head despite not being an expert), the less any single faked piece of evidence means.
And remember, no one has shown a photograph was faked. So far, all the "smoking guns" have instead been misunderstandings, and usually obvious ones, on the part of the people making hoax claims. Most of the major hoax arguments have incredibly simple responses, many of which don't even require understanding much about science. Certainly not more than you can pick up by just walking outside and looking at the world around you.