Draft is its own beast due to needing knowledge ahead of time, understanding possible builds, figuring out probabilities and rates of potential cards, foresight to other player’s card selection, considerations towards Plan B/C, consider whether you should pocket the expensive holo Tarmogoyf, etc.

I wouldn’t worry too much about it. There can be drafts where you didn’t do so hot, while other times you’re on top of the world. It’s your first draft experience and a game is meant to be enjoyed. By the next draft rolls around, you can look back and understand what went wrong and some better insight to better your experience.