I went to college for engineering, ended up switching to a math degree.
Figured out I liked computer science while taking CS classes for my math degree, minored in that and planned to be a software engineer.
Realized I don't want to code all day, got offered a sys engineer position.
Figured out DevOps existed a few years into working and now I do that
Most people don't know what they want to do and figure it out as they go. There are a lot of people that picked X for the money and stuck with it and hate their job.