So, just as some supporting information for folks: the starter set for 5e came with a small collection of pre-generated characters, specifically for new players, designed to help them explore what having a character and playing as them is like in this system, and to familiarise them with the processes involved, before they're completely ready to jump into character generations on their own. After that, no full module or game book for 5th has come with any pre-generated characters (other than the second starter set that was released which has a set of them for the same reason, and one or two particularly special small adventures that require very specific characters to run - you're not going to play Locathah rising without playing as a locathah, most likely), by design.
Playing someone else's character rather than your own is largely antithetical to modern D&D. It has evolved this way over time and over various editions - go back far enough and most of the original mass of various game systems that original D&D grew out of had neither characters nor magic items, nor any number of other things that are strong hallmarks of today's game.
