As others in this thread have already pointed out, what you are describing here is not really fear of missing out. It is just being unlucky or not having that huge amount of luck that is needed to be part of a new token that is achieving life changing gains. So of course you missed out on PEPE but so did almost every other person, that is interested into cryptos. I also like the whole Pepe meme and also the origing where it is coming from. So if i would have read that there is a new meme-coin launching that is named PEPE i would maybe also have invested.
Don't think to much about missed chances or you will get crazy. There are literally hundreds of new tokens launching each and every day. 99% of those are just useless meme-coins that are dead again in a few weeks but from time to time there is one that is giving life changing profits. You need to be very lucky to find that one project out of those thousands.