Let me pose an alternative universe where you got a job in the games industry early in your career. You'd be on a team so you'd work only on some piece of the game. Until you got a lot more experience, you'd be working on "junior" stuff like UI, tools, gameplay scripts, or something like that. Over a decade could go by and you might never build the majority of a game yourself.
I had a career in the game industry, and it was just like that for me. When mobile games became a thing, I quit my job at EA and built a whole game by myself for the first time.
If you want to build games, give yourself permission to just do it. I suggest you start on something really super simple and small that you can do by yourself, and finish it. Then keep iterating, or start on something else slightly more ambitious, and do that over and over. Force yourself to finish each one, even if you have to cut scope.
Recently I've been building a multiplayer online turn-based game. It's nothing fancy, just a card game with video conferencing, but developing it myself is way more satisfying than a job at a game company.