But practically speaking, you are not a Christian, so apparently you do not accept that revelation.
Why?
It says there that it was a revelation to hundreds of people…

First, even if it were convincing, we have the revelation at Sinai, which is no less convincing. So at most one can conclude that there is a doubt here, and each person should follow his tradition. Alternatively, one must decide which is more convincing. To the best of my judgment, Sinai is far more convincing: more public, earlier (and therefore the concern of copying exists with the Christians), and God should not be changing His mind, both by reason and by Scripture. If theirs seems more convincing to you, then be a Christian.

Because he is Jewish. In several religions there are greater and lesser revelations, so according to your logic you would have to follow all those religions together… There is no end to it. In the Jewish religion too there is revelation, and it seems to me the biggest and most significant one, so why should he convert to Christianity? The fact that someone does not follow a certain religion in a totally full way does not mean he does not accept parts of it. It is not black and white. People who are not of the Jewish religion can also accept various things from it as true, so does that now mean they should convert to Judaism?

I am not familiar with their doctrine.
But note whether the testimony about this mass revelation is told by the descendants of all those who saw the revelation (similar to the event at Sinai), or whether a very small number of people report that there was such a revelation, and then the ruling flips back, because those reporting the revelation are certainly not a multitude, but rather a few individuals.

Actually, being earlier weakens the argument—both because it is easier to attach miracle stories to things that happened in the distant past, and because even among idol worshippers there are mythological miracle stories from the distant past.
And also because Christians argue for replacement, so a later revelation fits with their theology.

Meir, the revelation at Fatima is from recent times, and Christians claim that there were tens of thousands there. Seemingly, this is a mass revelation, and many testified that they saw it and even received three prophecies that were fulfilled.
But I have not looked into the details enough.