In simple words, we can classify he FOMO for investors and traders. A trader needs to be more careful with risk management and FOMO while trading because on the investor end it can be handled.
You are right, you know, sometimes ago, there was this coin that was about to be listed on Binance exchange, but before they would list that coin, they decided to do a launch pad, and I had staked some fiatfor 30 days in order to receive that coin, but after the staking period was over and it was just a day for the coin to be listed, I decided to buy a lot of those coins because of the news that was released. According to the news, as soon as Binance lists the coin, it will spike from $2 to $10 and above. Mahn, this coin got listed at $2, but it was only able to reach $3–$4, although after some months, it still got to $8 and I sold earlier before then. Things never happened the way it was described on the news. Meanwhile, I just had some FOMO with that coin. I even felt that if the coin could give me x100 of my investment, then It's good, but I was disappointed. That is why I said FOMO can mislead some investors, mostly newbies.