It is all about demand and supply, we are currently in a bear market condition, price will increase slowly but not as many expected after the merge, it did not influenced the price much unfortunately.
Not much people realize this but this is actually the main reason of the market to not moving in a way they expected. Just as they have thought after the merge it will help to grow the price but if the Bitcoin market is in the bearish trend it's normal to see most altcoins will follow. Hence, the expected pump wouldn't be completed because there's less investors suggesting they think they won't make a profit if they would buy now since the market is starting to drop slowly. Most FOMO I experience only happens when there's a huge investors buying and the rest will likely to follow.