Are new NISA “loss-cutting people” one after another due to a drastic drop in stock prices?

$Nikkei 225(.N225.JP)$ Beginners in investing have been deceived quite a bit! It looks like they're cutting losses by thinking about it. Study everything. That's how you increase your assets by acquiring the “buy from below” technique! This is common sense! Also, I don't know the meaning of savings, so it's no good because they do it out of fashion. Japanese people don't think! I'll do it because everyone is doing it! Like music that everyone listens to, it happens because you can't see the essence of things! Everyone is doing it, so I have a big misunderstanding that it's right!