Cyberpunk 2077 is a brilliant RPG with a ton of options that allow players to really enjoy the game in the way they wish. That starts from the game's earliest throes, where you can choose from one of three origin stories or "Lifepaths" that serve as the background for your playable protagonist V.
Those three Lifepaths dictate whether you grew up in the wilderness as a Nomad, were raised in poverty in the dark alleyways of Heywood, Night City, as a Streetkid, or indeed in relative affluence as part of a Corpo family in one of the nicer parts of the city. If none of those take your fancy, or you've already taken advantage of all three, there is a mod out there that widens the options for the game's opening.
Over on Nexus Mods, you should be able to find the download page for New Lifepath Intro - Fresh Start, which as the name may suggest, provides an additional option at the start of the game for your character. In actuality, what it really does is combine the Nomad and Corpo backstories into one, leaving both options available to you later in the game when it comes to dialogue...
