What is your purpose?
If your purpose is to start a game business, you need to start investigating all the business aspects. For most game studios, the fact that they make games is almost incidental to the work the studio management is doing. They spend their time looking for business leads, solving business problems, getting workers, making payroll, navigating regulations, and other business concerns. Yes, having good game products to sell is important, but that means the business owner is hiring people to do the work, generally not doing the work themselves. For starting a business you need to be focusing your efforts on how to establish and grow a successful business, not about making a specific game.
If your purpose is to make amazing games, you need to work with a team of people to do that. Modern games require skills from many different people. For most people that means finding a job where they can do it professionally. (NOTE: That means being a worker at a studio, not an owner of the studio, who is spending their time trying to make the business run rather than actually making games.) Some people find like-minded friends and collaborate, but someone in the group needs to do the business side like making sure proper legal collaboration agreements are in place, making sure the game is marketable, working toward publication goals, and so on. In that path you'll need to first gain the skills that the job needs, then go get the job.
If you just want a hobby of making games, go for it. But recognize that hobbies really are hobbies. It may be like the people with a fixer-upper car in their garage that rusts away as they tinker, or the people with a hobby of fishing on weekends, spending more money than they will ever make back because they enjoy the past time rather than a quest for other value. Do it for the joy of doing it, with zero expectation of making money, nor supporting yourself, nor winning the game development lottery. You're statistically far more likely to get rich by buying lottery tickets.
