If Raven’s value keeps dropping, is there a “point of no return”?

We don't know for how long the current drop will keep going, so one thing I'm worried is: "is there a bottom value that if RVN crosses, it will not come back?"

I'm asking this because although some people say the lowest a crypto is, the better time it is to buy it; I fear it will get to a point in which it'll have no chances of getting up again, if such point of no return exists.

From what I understand about PoW cryptos, mining is necessary. However, if its value drop too much, I would guess many miners will stop mining, like I already saw some people around here saying they will, and from the drop in total hashrate I saw in Flypool. And if too few people mine, what exactly happens to the coin? Will it "crash" and not be able to be processed anymore?