FOMO - Fear of missing out.
For me, it was actually this year. I actually looked for a $pepe coin around January, because of my love for Pepe Lore memes and couldn’t find anything. Now I missed out on a meme coin of a lifetime.
You have understood this term the wrong way, FOMO happens when an investor looks at an asset that is going up in value and fearing they could miss on getting some of those profits they buy very late into the movement.
This is a risky proposition as such a pump is most of the time the result of a hype which cannot be sustained and which could cause you to lose a lot of money if you are not careful, you missed investing on this coin but at the same time you were disciplined enough to not do so when the price was very high, so while I can see why you are regretting this, you still have all your capital intact and you can invest in any other coin you may like.